activation
gb/ˌæktɪvˈeɪʃən/ us/ˌæktɪvˈeɪʃən/
B2
English
~ 6000
aktiválás, életbe léptetés, működésbe lépés, aktiváció, aktiválódás, aktivációs érték, mozgósítás, aktív szolgálatba helyezés, behívás, neutronaktiváció, felaktiválódás
NOUN
B2
1
aktiválás
B1
Usage pattern:
the activation of [a device/service/account/card]
You will receive an activation code by text message to complete your account activation.
A fiókja aktiválásának befejezéséhez SMS-ben kap egy aktiváló kódot.
The SIM card requires activation before you can make calls.
A SIM-kártyát aktiválni kell, mielőtt telefonálni tudna.
There was a problem with the activation of my new credit card.
After software activation, all premium features became available.
The activation fee will be added to your first monthly bill.
Learner examples
I am waiting for the activation of my new bank card.
Várom az új bankkártyám aktiválását.
Click this link to finish the activation of your account.
Kattintson erre a linkre a fiókja aktiválásának befejezéséhez.
Phone activation usually takes a few minutes.
The store helped me with the activation of my internet service.
Common mistake:
Learners sometimes say *"open my account"* when they mean *"activate my account"*. "Open" is used when the bank first creates the account; "activate" is used when you make a card, phone, or service start working. Another mistake is using a verb form *"I will activation my card"*; the correct verb is *"activate"*.
Meaning
starting a device or service
Collocations
activation code
|activation key
|activation email
|activation link
|activation fee
|account activation
Synonyms
enabling (A general word for making something able to work, not only for devices or services.)
Antonyms
deactivation (Refers to turning off or disabling a device, account, or service so it cannot be used.)
Themes
technology
|business
|daily life
|daily_life
Definition
The process of making a phone, card, or online account ready so you can use it.
The process of turning on or enabling a device, account, card, or service so that it can be used.
B2
2
Usage pattern:
the activation of [a plan/program/system/rule]
The activation of the emergency plan was ordered after the flood warnings were raised.
Az árvízriasztás magasabb szintre emelése után elrendelték a vészhelyzeti terv életbe léptetését.
Automatic activation of the alarm occurs if the temperature rises above a set limit.
A riasztó automatikusan működésbe lép, ha a hőmérséklet egy beállított határérték fölé emelkedik.
The contract includes an activation clause that triggers extra payments after a year.
The city announced the activation of its heat-response protocol.
Delays in activation of the new system caused confusion among staff.
Learner examples
The activation of the new rules starts next month.
Az új szabályok a jövő hónapban lépnek életbe.
There was a problem with the activation of the fire alarm system.
Probléma adódott a tűzjelző rendszer aktiválásával.
The manager approved the activation of the training program.
Activation of the security protocol is automatic during an attack.
Common mistake:
Learners sometimes use *"start"* where a more formal context needs *"activation"*, for example *"the start of the emergency plan"* instead of *"the activation of the emergency plan"*. "Start" is fine in casual speech, but "activation" is preferred in official or written contexts for systems, rules, and protocols.
Meaning
starting a plan or system
Collocations
activation of the emergency plan
|activation of sanctions
|protocol activation
|alarm activation
|system activation
|clause activation
Synonyms
implementation (Focuses more on carrying out a plan over time, not just the moment when it is officially started.)
Antonyms
suspension (Refers to officially stopping or pausing a plan, rule, or system that was active.)
Themes
work
|government
|organization
|business
|law
Definition
The act of making a plan, rule, or program start and really work.
The act of putting a plan, rule, program, or system into effect so that it begins to operate.
NOUN
C1
TECHNICAL
3
aktiváció
C1
aktiválódás
B2
Usage pattern:
the activation of [a cell/enzyme/receptor/brain region]
The drug increases activation of specific receptors in the brain.
A gyógyszer fokozza bizonyos agyi receptorok aktivációját.
T-cell activation is a key step in the body’s immune response.
A T-sejtek aktivációja a szervezet immunválaszának kulcsfontosságú lépése.
The scan showed strong activation in the visual cortex during the task.
Calcium ions play a crucial role in enzyme activation.
Researchers measured neural activation while participants watched the video.
Learner examples
The medicine changes the activation of cells in the body.
A gyógyszer megváltoztatja a sejtek aktiválódását a szervezetben.
Brain activation is higher when a person is afraid.
Félelem esetén erősebb az agyi aktiváció.
This signal causes the activation of the enzyme.
Scientists study the activation of the immune system.
Common mistake:
Learners may confuse "activation" with "activity". "Activation" is the process of becoming active; "activity" is the ongoing action or level of work. For example, *"enzyme activation"* (the start of work) vs. *"enzyme activity"* (how strongly it works).
Meaning
making cells or molecules active
Collocations
enzyme activation
|immune cell activation
|receptor activation
|T-cell activation
|brain activation
|pathway activation
Synonyms
stimulation (Often refers to causing activity, but is less specific; "activation" usually describes the exact process of becoming active in a system.)
Antonyms
inhibition (Refers to preventing or reducing the activity of a cell, enzyme, or pathway, which is the functional opposite of activation.)
Themes
science
|medicine
|health
Definition
In science, the process when a cell, enzyme, or part of the brain becomes active and starts working.
In biology, chemistry, or neuroscience, the process by which a cell, receptor, enzyme, or brain region becomes active and begins to carry out its function.
NOUN
C1
TECHNICAL
4
aktiváció
C1
Usage pattern:
the activation of [a neuron/unit/layer]
We visualized the activation of each layer to understand what the network was learning.
Vizualizáltuk az egyes rétegek aktivációit, hogy megértsük, mit tanul a hálózat.
The neuron’s activation is clipped at zero by the ReLU function.
A ReLU függvény nullánál levágja a neuron aktivációs értékét.
Batch normalization changes the distribution of activations during training.
Sparse activation helps the model focus on the most relevant features.
High activation in this filter suggests it is detecting vertical edges.
Learner examples
Each neuron in the network has an activation.
A hálózat minden neuronjának van aktivációs értéke.
We save the activations from the last layer for analysis.
Az utolsó réteg aktivációit elmentjük elemzéshez.
The activation becomes zero when the input is negative.
Different inputs produce different activation patterns.
Common mistake:
Learners sometimes mix up "activation" and "activation function". The activation function is the formula (like ReLU or sigmoid); the activation is the result after applying that formula.
Meaning
output of a neural network unit
Collocations
neuron activation
|activation function
|hidden layer activations
|ReLU activation
|activation map
|unit activation
Synonyms
output (A general word for what comes out of a system; "activation" is a specific kind of output in neural networks.)
Antonyms
suppression (Refers to forcing activations to be reduced or set to zero, effectively the opposite of producing a strong activation.)
Themes
technology
|science
|computing
Definition
In machine learning, the number that a neuron in a network sends out after a special function changes its input.
In machine learning, the numerical output of a neuron or unit in a neural network after an activation function has been applied.
NOUN
C1
TECHNICAL
5
Usage pattern:
the activation of [troops/units/reserves]
The government authorized the activation of 5,000 reservists.
A kormány engedélyezte 5000 tartalékos mozgósítását.
Activation of the unit was completed within 48 hours.
Az egység mozgósítása 48 órán belül befejeződött.
The activation order came late at night after the attack.
Following activation, the brigade moved to its designated positions.
The ceremony marked the activation of the new headquarters.
Learner examples
The army announced the activation of reserve forces.
A hadsereg bejelentette a tartalékos erők mozgósítását.
After activation, the soldiers were ready to move.
A mozgósítás után a katonák készen álltak az indulásra.
The president signed the activation order yesterday.
Activation of the unit was reported on the news.
Common mistake:
Learners may confuse "activation" with "training". Training is preparation; activation is the formal start of active service or readiness.
Meaning
putting troops into active service
Collocations
activation order
|activation of reserves
|unit activation
|brigade activation
|activation ceremony
Synonyms
deployment (Deployment usually means sending forces to a location, while activation means placing them into active status or readiness.)
Antonyms
demobilization (Refers to taking troops out of active service, the opposite of activation in a military setting.)
Themes
military
|government
|politics
|law
Definition
In the military, the official act of making soldiers or units start active work or be ready to fight.
In a military context, the formal process of bringing units or personnel into active service or full operational readiness.
NOUN
C2
TECHNICAL
6
Usage pattern:
the activation of [a material/sample/element]
Neutron activation of the sample allowed researchers to measure trace elements.
A minta neutronaktivációja révén a kutatók meg tudták mérni a nyomelemeket.
Activation products must be stored safely for many years.
Az aktivációs termékeket sok évig biztonságosan kell tárolni.
The team calculated activation levels for materials inside the reactor.
Uncontrolled activation can increase long-term radioactive waste.
Activation analysis was used to determine the composition of the alloy.
Learner examples
Activation can make a material dangerous for a long time.
Az aktiváció hosszú időre veszélyessé tehet egy anyagot.
Neutron activation happens inside a nuclear reactor.
A neutronaktiváció atomreaktorban megy végbe.
Scientists study activation to understand how safe a material is.
Activation products must be handled with care.
Common mistake:
Learners may think "activation" here just means "turning something on" in a general sense, but in nuclear physics it has the specific meaning of making a material radioactive.
Meaning
making material radioactive by irradiation
Collocations
neutron activation
|activation analysis
|activation product
|activation cross-section
Synonyms
irradiation (Irradiation is the act of exposing something to radiation; activation refers specifically to the resulting change into a radioactive state.)
Antonyms
decay (Radioactive decay is the natural loss of radioactivity over time, which moves a material away from the activated state.)
Themes
science
|energy
Definition
In nuclear science, the process when something becomes radioactive because it is hit by radiation.
In nuclear physics, the process by which a material becomes radioactive after exposure to radiation, especially neutrons.
Grammar
Dictionary form
activation
IPA
GB/ˌæktɪvˈeɪʃən/
US/ˌæktɪvˈeɪʃən/
Syllables & stress
ac - tiv - a - tion (4 syllables)
Stress on 3rd syllable (a)
Word forms
Noun
- Base: activation
- Plural: activation, activations
Word family
Forms
activations
noun
Negative and opposite forms
Advanced or less common
activator
noun
reactivate
verb
reactivation
noun
Expressions
activation barrier
1/ˌæktɪvˈeɪʃən bˈɛɹiɚ/
fixed phrase
technical
energy barrier before reaction starts
The energy wall that must be passed before a chemical or physical process can begin.
Examples
- The catalyst lowers the activation barrier, making the process faster.
- A high activation barrier prevents the reaction from happening at low temperatures.
activation code
1/ˌæktɪvˈeɪʃən kˈoʊd/
fixed phrase
code used to activate something
A set of numbers or letters you must enter to make a phone, program, or account start working.
Examples
- Enter the activation code sent to your phone to complete the sign-up.
- Without a valid activation code, the software will run in trial mode.
activation email
1/ˌæktɪvˈeɪʃən imˈeɪl/
fixed phrase
email to activate an account
An email that has a link or code you must use to make your new online account work.
Examples
- Check your inbox for an activation email and click the link inside.
- If you don’t receive an activation email, please contact support.
activation energy
1/ˌæktɪvˈeɪʃən ˈɛnɚd͡ʒi/
fixed phrase
technical
minimum energy to start reaction
In chemistry, the smallest amount of energy needed to make a chemical reaction begin.
Examples
- A catalyst lowers the activation energy of the reaction.
- Because the activation energy is high, the reaction is very slow at room temperature.
activation fee
1/ˌæktɪvˈeɪʃən fˈi/
fixed phrase
fee for starting a service
Money you pay one time to start using a phone, card, or other service.
Examples
- There is a $25 activation fee for new customers.
- The company waived the activation fee during the promotion.
activation function
1/ˌæktɪvˈeɪʃən fˈʌŋkʃən/
fixed phrase
technical
neural network output function
In machine learning, the math rule that takes a neuron's input and turns it into its output value.
Examples
- We switched the activation function from sigmoid to ReLU.
- Choosing the right activation function can improve model performance.
activation key
1/ˌæktɪvˈeɪʃən kˈi/
fixed phrase
software license code
A special code that lets you unlock and fully use a computer program.
Examples
- You need to buy an activation key to remove the trial limits.
- After entering the activation key, all features were unlocked.
activation level
1/ˌæktɪvˈeɪʃən lˈɛvəl/
fixed phrase
technical
amount of activity in a system
How strong the activity is in something like the brain, a cell, or a machine at a certain time.
Examples
- We observed higher activation levels in the amygdala under stress.
- The activation level of the sensor increases with temperature.
activation link
1/ˌæktɪvˈeɪʃən lˈɪŋk/
fixed phrase
link that activates an account
A web address in an email or message that you click to turn on your account or service.
Examples
- Click the activation link to verify your email address.
- The activation link expired, so I had to request a new one.
activation lock
1/ˌæktɪvˈeɪʃən lˈɑk/
fixed phrase
device security lock feature
A security tool on phones and tablets that stops other people from using the device unless they know the owner’s account and password.
Examples
- Make sure activation lock is turned on in your settings.
- Without the Apple ID, they couldn’t remove the activation lock.
activation process
1/ˌæktɪvˈeɪʃən pɹˈɑsˌɛs/
fixed phrase
steps needed to activate something
The set of actions you must follow to make a device, service, or account start working.
Examples
- The activation process only takes a few minutes online.
- Our website explains the activation process step by step.