Lexic.us

Definition of Atom

1. Noun. (physics and chemistry) the smallest component of an element having the chemical properties of the element.

Definition of Atom

1. n. An ultimate indivisible particle of matter.

2. v. t. To reduce to atoms.

Definition of Atom

1. Noun. The smallest, indivisible constituent part or unit of something. ¹

2. Noun. (physics) The smallest possible amount of matter which still retains its identity as a chemical element, now known to consist of a nucleus surrounded by electrons. ¹

3. Noun. (mathematics) A non-zero member of a Boolean algebra that is not a union of any other elements. ¹

4. Noun. (historical) A theoretical particle of matter, imagined to be incapable of further division; the smallest possible unit of substance. ¹

5. Noun. (obsolete) The smallest medieval unit of time, equal to fifteen ninety-fourths of a second. ¹

6. Noun. (computing programming Lisp) An individual number or symbol, as opposed to a list. A scalar value. ¹

7. Noun. A very small amount. ¹

¹ Source: wiktionary.com

Definition of Atom

1. the smallest unit of an element [n -S] : ATOMIC, ATOMICAL [adj]

Medical Definition of Atom

1. A particle of matter indivisible by chemical means. It is the fundamental building block of the chemical elements. The elements, such as iron, lead and sulphur, differ from each other because they contain different kinds of atoms. There are about six sextillion (6 followed by 21 zeros or 6 x 1021) atoms in an ordinary drop of water. According to present day theory, an atom contains a dense inner core (the nucleus) and a much less dense outer domain consisting of electrons in motion around the nucleus. Atoms are electrically neutral. (16 Dec 1997)

Lexicographical Neighbors of Atom

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