Meaning

noun range of what one can know or understand

noun the range of vision

originNorthern English dialects and Scots language from Middle English kennen, from Old English cennan (“make known, declare, acknowledge”) originally “to make known”, causative of cunnan (“to become acquainted with, to know”), from Proto-West Germanic *kannijan, from Proto-Germanic *kannijaną, causative of *kunnaną (“be able”), from which comes the verb can. Cognate with West Frisian kenne (“to know;…

Etymology from Wiktionary, CC BY-SA 3.0