What is an atom?

What is an atom? Here are some definitions.

Noun (chemistry) 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. [from 16th c.] (history of science) A hypothetical particle posited by Greek philosophers as an ultimate and indivisible component of matter. [from 15th c.] (now generally regarded figuratively) The smallest, indivisible constituent part or unit of something. [from 17th c.] (now historical) The smallest medieval unit of time, equal to fifteen ninety-fourths of a second. [from 10th c.] A mote of dust in a sunbeam. [from 16th c.] A very small amount; a whit. [from 17th c.] (computing) An individual number or symbol, as opposed to a list; a scalar value. [from 20th c.] (mathematics) A non-zero member of a Boolean algebra that is not a union of any other elements. [from 20th c.] (mathematics) An element of a set that is not itself a set; an urelement. [from 20th c.] Find more words! 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What is the opposite of atom? Sentences with the word atom Words that rhyme with atom What is the plural of atom? What is the adverb for atom? What is the adjective for atom? What is the noun for atom? Translations for atom Nearby Definitions atolls atoll fruit doves atoll fruit dove atoll atole ATOL atomate atom bomb atom bombs atomi atomic atomic absorption spectroscopy 4-letter Words Starting With a at ato