atom
gb/ˈætəm/ us/ˈætəm/
B1
Anh
~ 2500
Các nghĩa
0 nghĩa
Danh từ
technical
B1
entity
1
smallest unit of an element
The tiniest part of an element that still has the same properties as that element.
Mẫu sử dụng:
an atom of [element]
Lỗi thường gặp:
Learners sometimes confuse 'atom' with 'molecule'. An atom is a single particle of an element; a molecule is two or more atoms joined together.
Từ đồng nghĩa
particle (A more general term for a small piece of matter, not necessarily a chemical element.)
Từ trái nghĩa
molecule (A molecule is made of two or more atoms bonded together, so it is larger and more complex.)
Cụm từ đi kèm
split an atom
|hydrogen atom
|carbon atom
|atomic structure
|atom model
Chủ đề
science
|chemistry
|physics
Ví dụ
- 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.
Ví dụ cho người học
- An atom is very small.
- This is an atom of oxygen.
- Atoms make up all things.
Danh từ
B2
quantity
2
a very tiny amount
A very, very small amount of something.
Mẫu sử dụng:
not an atom of [something]
Lỗi thường gặp:
Learners may overuse this figuratively; it is more common in formal or literary contexts than in casual speech.
Từ đồng nghĩa
bit (A small amount, but less emphatic than 'atom'.)
Từ trái nghĩa
lot (A large amount, opposite in quantity.)
Cụm từ đi kèm
not an atom of truth
|without an atom of doubt
Chủ đề
measurement
|figurative
|core_vocabulary
Ví dụ
- 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.
Ví dụ cho người học
- 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.
Ngữ pháp
Dạng từ điển
atom
IPA
GB/ˈætəm/
US/ˈætəm/
Âm tiết và trọng âm
atom (1 âm tiết)
Stress on 1st syllable (atom)
Các dạng từ
Noun
- Base: atom
- Plural: atoms
Họ từ
Forms
atoms
noun
Core family
atomic
adjective B2
Related words
atomize
verb
atomization
noun
Advanced or less common
subatomic
adjective
atomically
adverb
Cách diễn đạt
not an atom of truth
1/nˈɑt ən ˈætəm əv tɹˈuθ/
fixed phrase
no truth at all
It means that something is completely false.
Ví dụ
- 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.
Ví dụ
- 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.