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Webster 1913 Edition

Co-

Co-

(kō̍-)
.
A form of the prefix com-, signifying with, together, in conjunction, joint. It is used before vowels and some consonants. See
Com-
.

Definition 2024

co-

co-

See also: Appendix:Variations of "co"

English

Prefix

co-

  1. together; mutually; jointly
  2. partner or subordinate in an activity
  3. to the same degree
  4. (mathematics) of the opposite, of the counterpart; dual
    cokernel; codimension; cosine; counion; cointersection

Translations

Usage notes

  • With many terms, a hyphen (-) is used in British English (e.g. co-operate), which is omitted in American English (e.g. cooperate).

Derived terms

<a class='CategoryTreeLabel CategoryTreeLabelNs14 CategoryTreeLabelCategory' href='/wiki/Category:English_words_prefixed_with_co-'>English words prefixed with co-</a>
  • cosemisimple
  • coseparable
  • cosplit
  • counital

French

Prefix

co-

  1. co- (together; jointly)

Derived terms

<a class='CategoryTreeLabel CategoryTreeLabelNs14 CategoryTreeLabelCategory' href='/wiki/Category:French_words_prefixed_with_co-'>French words prefixed with co-</a>

Latin

Prefix

co-

  1. together, with
    cogere, Quirinus (co-viri-nus), cohaerere, coire, colligere
  2. (intensifier)
    • orior ("I rise") → coorior ("I arise", "I spring forth")
    • emo ("I buy") → coemo ("I buy up")
    • rumpo ("I break", "I destroy") → corrumpo ("I pervert", "I contaminate")
    • horresco ("I dread") → cohorresco ("I shudder", "I shiver")
    • labor ("I slip", "I go wrong") → collabor ("I collapse", "I fall in ruin")

Derived terms

<a class='CategoryTreeLabel CategoryTreeLabelNs14 CategoryTreeLabelCategory' href='/wiki/Category:Latin_words_prefixed_with_co-'>Latin words prefixed with co-</a>

Related terms

Manx

Etymology

From Old Irish com-.

Prefix

co-

  1. co-

Derived terms

<a class='CategoryTreeLabel CategoryTreeLabelNs14 CategoryTreeLabelCategory' href='/wiki/Category:Manx_words_prefixed_with_co-'>Manx words prefixed with co-</a>

Mutation

Manx mutation
Radical Lenition Eclipsis
co- cho- go-
Note: Some of these forms may be hypothetical. Not every
possible mutated form of every word actually occurs.

References

  • “com-” in Dictionary of the Irish Language, Royal Irish Academy, 1913–76.

Scottish Gaelic

Alternative forms

Etymology

From Old Irish com-.

Prefix

co-

  1. Usually (but not always) designates mutuality or reciprocity.

Derived terms

<a class='CategoryTreeLabel CategoryTreeLabelNs14 CategoryTreeLabelCategory' href='/wiki/Category:Scottish_Gaelic_words_prefixed_with_co-'>Scottish Gaelic words prefixed with co-</a>

References

  • “com-” in Dictionary of the Irish Language, Royal Irish Academy, 1913–76.

Spanish

Prefix

co-

  1. co-

Derived terms

<a class='CategoryTreeLabel CategoryTreeLabelNs14 CategoryTreeLabelCategory' href='/wiki/Category:Spanish_words_prefixed_with_co-'>Spanish words prefixed with co-</a>

Etymology

From the Latin prefix co-.

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