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.) Description; sort.

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

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

acutance appellation atmospheric visibility baptism black spot bloom blooping bounding calling ceiling ceiling unlimited characterization christening circling-in circumscribing circumscription clarification clarity clear-cutness clearness coherence connectedness consistency conspicuity conspicuousness construction crystal-clearness crystallinity definiteness delimitation delineation demarcation denomination description designation determination diagnosis differentiation directness distinction distinctness encincture evidence evidentness explanation explication explicitness flare focus fringe area ghost granulation grid hard shadow high visibility identification image inclusion-exclusion interpretation limpidity low visibility lucidity manifestness meaning multiple image naming nicknaming noise obviousness outlining patentness pellucidity percipi perspicuity picture picture noise picture shifts plain English plain speech plain style plainness precision prominence rain reading resolution rolling scanning pattern scintillation seeing sense shading sharpness simplicity snow snowstorm specification straightforwardness structure styling terming transparency transpicuity unadorned style unambiguousness unequivocalness unmistakableness visibility unlimited visibility zero way of seeing