Webster
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Webster’s Revised Unabridged Dictionary · 1913

Definition

Def′i·ni′tion (dĕf′ĭ·nĭsh′ŭn), n. [L. definitio: cf. F. définition.] 1. The act of defining; determination of the limits; as, a telescope accurate in definition.

2. Act of ascertaining and explaining the signification; a description of a thing by its properties; an explanation of the meaning of a word or term; as, the definition of "circle;" the definition of "wit;" an exact definition; a loose definition.

Definition being nothing but making another understand by words what the term defined stands for. Locke.

3. Description; sort. [R.] "A new creature of another definition." Jer. Taylor.

4. (Logic) An exact enunciation of the constituents which make up the logical essence.

5. (Opt.) Distinctness or clearness, as of an image formed by an optical instrument; precision in detail.

Syn. — Definition, Explanation, Description. A definition is designed to settle a thing in its compass and extent; an explanation is intended to remove some obscurity or misunderstanding, and is therefore more extended and minute; a description enters into striking particulars with a view to interest or impress by graphic effect. It is not therefore true, though often said, that description is only an extended definition. "Logicians distinguish definitions into essential and accidental. An essential definition states what are regarded as the constituent parts of the essence of that which is to be defined; and an accidental definition lays down what are regarded as circumstances belonging to it, viz., properties or accidents, such as causes, effects, etc." Whately.

Webster’s Revised Unabridged Dictionary, Noah Porter, editor (Springfield, Mass.: G. & C. Merriam, 1913). Public domain. Text as transcribed by MICRA, Inc., from Project Gutenberg. Changed for Deep Dive Bible: Greek, which our source spelled in Latin letters, set in Greek letters; entries of one spelling merged into one article; Greek words our source left out (shown as “?”), read from the 1898 printing, from the same plates (the Library of Congress’s copy), where the place could be found with certainty. Of the others, 1,362 (a word or a single letter each) were inferred by AI from the context by the dictionary’s own rules and are marked with a wavy underline (tap or point at one to see the note); the rest, which could not be inferred with confidence, are left as “?”.