Partner or associate in an activity: 同伴：某项活动的合作者或合伙人： coauthor; cofounder. 合著者；共同创立者
Subordinate or assistant: 部属，助手： copilot. 副驾驶员
To the same extent or degree: 达到相同范围或程度： coextensive. 共同扩张的
Complement of an angle: 余角： cotangent. 余切
语源
Middle English 中古英语
from Latin 源自 拉丁语
variant of com- [com-] com-的变体 [前缀，表“与，和”]
co-
prefix
together; joint or jointly; mutual or mutually
⇒coproduction
indicating partnership or equality
⇒cofounder
⇒copilot
to the same or a similar degree
⇒coextend
(in mathematics and astronomy) of the complement of an angle
⇒cosecant
⇒codeclination
Origin
from Latin, reduced form of com-
Example Sentences
He got the compressor going and patted the machine, now an old friend and co- conspirator.
Terman, DouglasCormorant
-- Why should I give you favours when you're not co- operating?
Forbes, BryanA Song at Twilight
co-
in Latin, the form of com- in compounds with stems beginning in vowels and h- and gn- (see com-). Taken in English from 17c. as a living prefix meaning "together, mutually, in common," and used promiscuously with native words and Latin-derived words not beginning with vowels, sometimes even with words already having it (such as co-conspiritor).
co-/kəʊ/prefix.
ORIGIN:Latin, var. of com- esp. before vowels, h, and gn: cf. col-, con-, cor-.
1.Used in words adopted from Latin and in English words modelled on these, and as a productive prefix, forming: (a) verbs from verbs with the sense ‘with others’, as co-edit, cooperate;(b) adjectives from adjectives and adverbs from adverbs with the senses ‘jointly’, ‘mutually’, as co-belligerent, coequal, coequally;(c) nouns from nouns with the senses ‘joint’, as co-author, co-precipitation, and ‘mutual’, as coequality.b.Biology. Forming names of substances which combine with others to produce an effect, or enhance the action of others, but are individually inactive, as co-carcinogen, coenzyme.
2.Math. Short for complement, in the sense ‘of the complement’ (as cosine) or ‘complement of’ (as co-latitude).
co-
prefix. a form of com-.
with; together: Cooperate = to act with or together.
joint; fellow: Coauthor = a joint or fellow author.
equally: Coextensive = equally extensive.
Mathematics. complement: Cosine = sine of the complement (of a given angle or arc).
[< Latin co-, variant of com- with < cum with]
c/o (no periods) or c.o.
carried over.
in care of.
Co (no period)
cobalt (chemical element).
Co. or co.
company.
county.
CO (no periods) or C.O.
an abbreviation for the following:
cash order.
Colorado (with postal Zip Code).
commanding officer.
Informal. conscientious objector.
co- prefix Etymology: Middle English, from Latin, from com-; akin to Old English ge-, perfective, associative, and collective prefix, Old High German gi-, ga-, Gothic ga-, Old Irish com-, con- with, together, Albanian kë-, Greek koinos common 1.: with : together : joint : jointly : shared : mutual : mutually < coexist > < coinheritance > < cosustain > < cooperate > 2.: in or to the same degree < coextensive > < coeval > 3. a.: fellow : partner < coauthor > < co-worker > b.: having a usually lesser share in duty or responsibility : alternate : deputy < cochairman > < copilot > 4. a.: operating together or reciprocally < coterm > b.: of the complement of an angle < cosine > < codeclination >
co-
Prefix
together; mutually; jointly
partner or subordinate in an activity
to the same degree
mathematics of the opposite, of the counterpart; dual