atom
gb/ˈætəm/ us/ˈætəm/
B1
Inglés
~ 2500
atom, nyomnyi mennyiség, csipetnyi, fikarcnyi, szemernyi, szikrányi
SUSTANTIVO
B1
TECHNICAL
1
atom
B1
Patrón de uso:
an atom of [element]
A water molecule is made up of two hydrogen atoms and one oxygen atom.
Egy vízmolekula két hidrogénatomból és egy oxigénatomból áll.
Scientists can split an atom to release energy.
A tudósok fel tudnak hasítani egy atomot, hogy energiát szabadítsanak fel.
Every atom of gold has the same number of protons.
Ejemplos para estudiantes
An atom is very small.
Az atom nagyon kicsi.
This is an atom of oxygen.
Ez egy oxigénatom.
Atoms make up all things.
Error frecuente:
Learners sometimes confuse 'atom' with 'molecule'. An atom is a single particle of an element; a molecule is two or more atoms joined together.
Significado
smallest unit of an element
Colocaciones
split an atom
|hydrogen atom
|carbon atom
|atomic structure
|atom model
Sinónimos
particle (A more general term for a small piece of matter, not necessarily a chemical element.)
Antónimos
molecule (A molecule is made of two or more atoms bonded together, so it is larger and more complex.)
Temas
science
|chemistry
|physics
Definición
The tiniest part of an element that still has the same properties as that element.
The smallest unit of a chemical element that retains the properties of that element, consisting of a nucleus and electrons.
SUSTANTIVO
B2
2
Patrón de uso:
not an atom of [something]
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.
Ejemplos para estudiantes
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.
Error frecuente:
Learners may overuse this figuratively; it is more common in formal or literary contexts than in casual speech.
Significado
a very tiny amount
Colocaciones
not an atom of truth
|without an atom of doubt
Sinónimos
bit (A small amount, but less emphatic than 'atom'.)
Antónimos
lot (A large amount, opposite in quantity.)
Temas
measurement
|figurative
|core_vocabulary
Definición
A very, very small amount of something.
An extremely small quantity of something, often used figuratively to emphasize minuteness.
Gramática
Forma de diccionario
atom
AFI
GB/ˈætəm/
US/ˈætəm/
Sílabas y acento
atom (1 sílaba)
Stress on 1st syllable (atom)
Formas de la palabra
Noun
- Base: atom
- Plural: atoms
Familia de palabras
Forms
atoms
noun
Core family
atomic
adjective B2
Related words
atomize
verb
atomization
noun
Advanced or less common
subatomic
adjective
atomically
adverb
Expresiones
not an atom of truth
1/nˈɑt ən ˈætəm əv tɹˈuθ/
fixed phrase
no truth at all
It means that something is completely false.
Ejemplos
- 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.
Ejemplos
- 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.