| 释义 |
known
I. \ˈnōn sometimes -ōən\ adjective
Etymology: Middle English knowen, knawen, from past participle of knowen, knawen to know — more at know
: that is apprehended or perceived by the mind or senses : that has become a part of knowledge
< a known truth that no one denies >
: familiar through knowledge or experience
< beyond the limits of the known world — A.C.Whitehead >
especially : generally recognized
< a known authority in this matter >
II. noun
(-s)
1. : something known : something familiar or recognized; specifically : a substance of known composition — used especially in chemical analysis
< chemical determinations performed on knowns — A.A.Benedetti-Pichler >
2. : a letter (as in a2 + 2ab) or some other symbol (as π) used in a mathematical equation to represent a known number or quantity |