con-

• com-

From Middle English con-, from Latin con-, from cum (“with”).

con-

1. Unite: to unite into a collection indicated by the root word.

   concorporate is united into a single body, conglobulate is to collect together into a globule, conglutination is to glue together into a glutination

2. Together: the root is done together.

   conarticular is that articulates together, conjubilant is rejoicing together, consubsistence is subsistence together

3. Having commonality, having the same property indicated by the root.

   confocal is having the same foci, consimilar is having similarities in common, conterminant is having the same termination

   1. Belonging to the same group indicated by the root.

      confamilial is belonging to the same taxonomic family, contypic is relating to the same type, conspecific is relating to the same species

   2. Synchronous or simultaneous with the root.

      connascent is born together, concreate is to create at the same time, congeneration is simultaneous generation (as of heat and light from the same action)

   3. A fellow kind of the root.

      concitizen is a fellow citizen, condisciple is a fellow disciple, concelebrant is one who concelebrates

4. To do the root.

   convivify is to gain eternal life, confix is to make firm, constrict is to limit or restrict

   1. Intensifying the root.

      congenial is very genial, connatural is inherent (very natural), convicinity is immediate vicinity (very close)

5. Indicating a common origin:
   1. Found with. What is found with the root.

      consalazinic acid is a lichen acid found together with salazinic acid, conphaseolin is a protein found with phaseolin, connegative is a verb form used with a negative verb in certain languages

   2. From, coming from the root.

      consequence as what comes from the sequence, convicine is a glycoside coming from vicine, connatal is an anomaly present at birth

6. When one entity is put into another, or one entity affects the other.

   conplastic is produced by introducing the genetic material from one strain into the cytoplasm of another; contour is a speech sound which behaves as a single segment, but which makes an internal transition from one quality, place, or manner to another; converb is a verb with a stressed, separable prefix

7. Mutuality, indicating a reciprocal relationship or influence

   confraternization is mutual fraternization, confated is fated with something else, connascence is a relationship between two or more elements of software in which changing one necessitates changing the others in order to maintain overall correctness

8. To surround or adorn with

   constrict is to coil around prey in order to asphyxiate it, constellate is to adorn with constellations

9. Uniform, or made to be the same as.

   concolorate is having a uniform colour

Con- becomes

col- before l: collaborate;

com- before b, m, and p: combat, commit, compel;

cor- before r: correlation;

It can also appear as co- before a vowel: coexistence, cosine.

• (together): co-, com-/col-/cor-, syn-/syl-/sym-, inter-

Back-formation from conlang, short for "constructed language".

con-

1. attached to certain words to obtain new, informal, subcultural words in which con- conveys a notion of:
   1. constructed, artificial
   2. hypothetical, fictional
   3. related to conlangs, conworlds, etc.

• CNO, NCO, NOC, OCN, ONC, onc

Ultimately from Latin con-. This etymology is incomplete. You can help Wiktionary by elaborating on the origins of this term.

• IPA^(key): /kɔn/

• Audio

  (file)

con-

1. con- (1)

Inherited from Latin con-, from cum (“with”).

• IPA^(key): /kɔ̃/

con-

1. con-

Behaves as it does in English; see English usage notes.

From Latin con-, from cum (“with”).

• IPA^(key): [kɔ̃]

con-

1. con- (1)

• com-, qem-, qen-

• co-, com-

From Proto-Celtic *kom- (“with, together”), from Proto-Indo-European *ḱóm. Cognate with Old Irish com-, Welsh cyf-, Breton kev- or kem-.

con-

1. con- (1)

• co-
• com-

From Latin con-, from cum (“with”).

• IPA^(key): /kon/
• Hyphenation: con-

con-

1. con- (1)

From the preposition cum (“with”).

• (Classical) IPA^(key): /kon/, [kɔn]
• (modern Italianate Ecclesiastical) IPA^(key): /kon/, [kon]

con-

1. Used in compounds to indicate a being or bringing together of several objects

   coeō, colloquor, convīvor, etc.: colligō, compōnō, condō, etc.

2. Used in compounds to indicate the completeness, perfecting of any act, and thus gives intensity to the signification of the simple word

   commaculō, commendō, concitō, comminuō, concerpō, concīdō, convellō, etc.

• Before vowels and h, the prefix becomes co-, or rarely com-. Excluded are i and u when these represent /j/ and /w/.
• Before b, m and p, the prefix becomes com-.
• Before l, the prefix becomes col-.
• Before r, the prefix becomes cor-.
• Before n, the prefix becomes cō- (or remains con-, in Late Latin).
• Before original gn, the prefix becomes co- and gn is not reduced to n.

As usual in Latin phonology, the sequences ons and onf are pronounced with nasalised long vowels, and the vowel is written with a macron, i.e. cōnspīrō and cōnferō.

• “con-”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers

• com-

Borrowed from Old French con- and Latin con-.

• IPA^(key): /kɔn-/, /kun-/

con-

1. (non-productive) con- (with)

• This prefix frequently has reduced or no semantic force.

• English: con-
• Scots: con-

• “con-, cǒn-, pref.”, in MED Online, Ann Arbor, Mich.: University of Michigan, 2007.

• co-, com-

Inherited from Latin con-, from cum (“with”).

• IPA^(key): /kon/ [kõn]
• Syllabification: con-

con-

1. with

• Before the letters b or p use the form com-. Sometimes the co- form is used instead.

• “con-”, in Diccionario de la lengua española, Vigésima tercera edición, Real Academia Española, 2014