atom
gb/ˈætəm/ us/ˈætəm/
B1
Английски
~ 2500
Значения
0 значения
Съществително
technical
B1
entity
1
smallest unit of an element
The tiniest part of an element that still has the same properties as that element.
Модел на употреба:
an atom of [element]
Честа грешка:
Learners sometimes confuse 'atom' with 'molecule'. An atom is a single particle of an element; a molecule is two or more atoms joined together.
Синоними
particle (A more general term for a small piece of matter, not necessarily a chemical element.)
Антоними
molecule (A molecule is made of two or more atoms bonded together, so it is larger and more complex.)
Колокации
split an atom
|hydrogen atom
|carbon atom
|atomic structure
|atom model
Теми
science
|chemistry
|physics
Примери
- A water molecule is made up of two hydrogen atoms and one oxygen atom.
- Scientists can split an atom to release energy.
- Every atom of gold has the same number of protons.
Примери за учащи
- An atom is very small.
- This is an atom of oxygen.
- Atoms make up all things.
Съществително
B2
quantity
2
a very tiny amount
A very, very small amount of something.
Модел на употреба:
not an atom of [something]
Честа грешка:
Learners may overuse this figuratively; it is more common in formal or literary contexts than in casual speech.
Синоними
bit (A small amount, but less emphatic than 'atom'.)
Антоними
lot (A large amount, opposite in quantity.)
Колокации
not an atom of truth
|without an atom of doubt
Теми
measurement
|figurative
|core_vocabulary
Примери
- There isn’t an atom of truth in his story.
- She didn’t have an atom of doubt about his honesty.
- He showed not an atom of fear.
Примери за учащи
- There is not an atom of sugar in this tea.
- He has not an atom of doubt.
- She does not have an atom of fear.
Граматика
Речникова форма
atom
IPA
GB/ˈætəm/
US/ˈætəm/
Срички и ударение
atom (1 сричка)
Stress on 1st syllable (atom)
Форми на думата
Noun
- Base: atom
- Plural: atoms
Семейство думи
Forms
atoms
noun
Core family
atomic
adjective B2
Related words
atomize
verb
atomization
noun
Advanced or less common
subatomic
adjective
atomically
adverb
Изрази
not an atom of truth
1/nˈɑt ən ˈætəm əv tɹˈuθ/
fixed phrase
no truth at all
It means that something is completely false.
Примери
- There is not an atom of truth in those rumors.
- His statement contained not an atom of truth.
split the atom
1/splˈɪt ðə ˈætəm/
fixed phrase
technical
break apart an atomic nucleus
To break the center of an atom to release energy.
Примери
- Nuclear power plants do not literally split the atom in the same way as early experiments did.
- The discovery that you could split the atom changed history.