n. (also cognisance)
1. knowledge or awareness; perception, notice.
2 the sphere of one's observation or concern.
3 Law the right of a court to deal with a matter.
4 Heraldry a distinctive device or mark.
Phrases and idioms:
have cognizance of know, esp. officially. take cognizance of attend to; take account of.
Etymology: ME f. OF conoisance ult. f. L cognoscent- f. cognitio: see COGNITION