Atom

Pronunciation: /ˈætəm/

Definitions of atom

noun a basic unit of matter that consists of a dense central nucleus surrounded by a cloud of negatively charged electrons

Example Sentences

A1 An atom is the smallest unit of matter.

A2 Atoms combine to form molecules.

B1 The structure of an atom includes a nucleus and electrons.

B2 Chemical reactions involve the rearrangement of atoms.

C1 Scientists can manipulate atoms at the nanoscale.

C2 Understanding the behavior of atoms is crucial in quantum physics.

Examples of atom in a Sentence

formal The atom is the basic unit of matter.

informal I learned about atoms in my science class.

slang That party was atom! (awesome)

figurative Her smile lit up the room like a nuclear atom.

Grammatical Forms of atom

• past tense: atomized
• plural: atoms
• comparative: more atomic
• superlative: most atomic
• present tense: atomizes
• future tense: will atomize
• perfect tense: has atomized
• continuous tense: is atomizing
• singular: atom
• positive degree: atomic
• infinitive: to atomize
• gerund: atomizing
• participle: atomized

Origin and Evolution of atom

First Known Use: 0450 year

Language of Origin: Greek

Story behind the word: The word 'atom' originates from ancient Greek philosophy, specifically from the theories of Leucippus and Democritus.

Evolution of the word: Initially used to describe indivisible particles that make up all matter, the concept of atoms has evolved over time with advancements in science and technology, leading to our current understanding of atoms as the basic building blocks of elements.