(1):
(n.) The act of defining; determination of the limits; as, a telescope accurate in definition.
(2):
(n.) 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.
(3):
(n.) An exact enunciation of the constituents which make up the logical essence.
(4):
(n.) Description; sort.
(5):
(n.) Distinctness or clearness, as of an image formed by an optical instrument; precision in detail.