Coachman noun ; plural Coachmen .
1. A man whose business is to drive a coach or carriage.

2. (Zoology) A tropical fish of the Atlantic ocean ( Dutes auriga ); -- called also charioteer . The name refers to a long, lashlike spine of the dorsal fin.

Coachmanship noun Skill in driving a coach.

Coachwhip snake (Zoology) A large, slender, harmless snake of the southern United States ( Masticophis flagelliformis ).

» Its long and tapering tail has the scales so arranged and colored as to give it a braided appearance, whence the name.

Coact transitive verb [ Latin coactare , intens. from cogere , coactum , to force. See Cogent .] To force; to compel; to drive. [ Obsolete]

The faith and service of Christ ought to be voluntary and not coacted .
Foxe.

Coact intransitive verb [ Prefix co- + act , intransitive verb ] To act together; to work in concert; to unite. [ Obsolete]

But if I tell you how these two did coact .
Shak.

Coaction noun [ Latin coactio .] Force; compulsion, either in restraining or impelling. Sojth.

Coactive adjective [ In sense 1, from 1st Coact ; in sense 2, from 2d Coact .]
1. Serving to compel or constrain; compulsory; restrictive.

Any coactive power or the civil kind.
Bp. Warburton.

2. Acting in concurrence; united in action.

With what's unreal thou coactive art.
Shak.

Coactively adverb In a coactive manner.

Coactivity noun Unity of action.

Coadaptation noun Mutual adaption. R. Owen.

Coadapted adjective Adapted one to another; as, coadapted pulp and tooth. R. Owen.

Coadjument noun Mutual help; coöperation. [ R.] Johnson.

Coadjust transitive verb To adjust by mutual adaptations. R. Owen.

Coadjustment noun Mutual adjustment.

Coadjutant adjective Mutually assisting or operating; helping. J. Philips.

Coadjutant noun An assistant. R. North.

Coadjuting adjective Mutually assisting. [ Obsolete] Drayton.

Coadjutive adjective Rendering mutual aid; coadjutant. Feltham.

Coadjutor noun [ Latin See Co -, and Aid .]
1. One who aids another; an assistant; a coworker.

Craftily outwitting her perjured coadjutor .
Sheridan.

2. (R. C. Ch.) The assistant of a bishop or of a priest holding a benefice.

Coadjutorship noun The state or office of a coadjutor; joint assistance. Pope.

Coadjutress, Coadjutrix noun A female coadjutor or assistant. Holland. Smollett.

Coadjuvancy noun Joint help; coöperation. Sir T. Browne.

Coadjuvant adjective Coöperating.

Coadjuvant noun (Medicine) An adjuvant.

Coadunate adjective [ Latin coadunatus , past participle of coadunare to unite. See Adunation .] (Botany) United at the base, as contiguous lobes of a leaf.

Coadunation noun [ Latin coadunatio .] Union, as in one body or mass; unity. Jer. Taylor.

The coadunation of all the civilized provinces.
Coleridge.

Coadunition noun [ Prefix co- + prefix ad- + unition .] Coadunation. [ R.] Sir M. Hale.

Coadventure noun An adventure in which two or more persons are partakers.

Coadventure intransitive verb To share in a venture. Howell.

Coadventurer noun A fellow adventurer.

Coafforest transitive verb To convert into, or add to, a forest. Howell.

Coag noun See Coak , a kind of tenon.

Coagency noun Agency in common; joint agency or agent. Coleridge.

Coagent noun An associate in an act; a coworker. Drayton.

Coagment transitive verb [ Latin coagmentare , from coagmentum a joining together, from cogere . See Cogent .] To join together. [ Obsolete] Glanvill.

Coagmentation noun [ Latin coagmentatio .] The act of joining, or the state of being joined, together; union. [ Obsolete] B. Jonson.

Coagulability noun The quality of being coagulable; capacity of being coagulated. Ure.

Coagulable adjective Capable of being coagulated. Boyle.

Coagulant noun [ Latin coagulans , present participle] That which produces coagulation.

Coagulate adjective [ Latin coagulatus , past participle of coagulare to coagulate, from coagulum means of coagulation, from cogere , coactum , to drive together, coagulate. See Cogent .] Coagulated. [ Obsolete] Shak.

Coagulate transitive verb [ imperfect & past participle Coagulated ; present participle & verbal noun Coagulating .] To cause (a liquid) to change into a curdlike or semisolid state, not by evaporation but by some kind of chemical reaction; to curdle; as, rennet coagulates milk; heat coagulates the white of an egg.

Coagulate intransitive verb To undergo coagulation. Boyle.

Syn. -- To thicken; concrete; curdle; clot; congeal.

Coagulated adjective Changed into, or contained in, a coagulum or a curdlike mass; curdled.

Coagulated proteid (Physiol. Chem.) , one of a class of bodies formed in the coagulation of a albuminous substance by heat, acids, or other agents.

Coagulation noun [ Latin coagulatio .]
1. The change from a liquid to a thickened, curdlike, insoluble state, not by evaporation, but by some kind of chemical reaction; as, the spontaneous coagulation of freshly drawn blood; the coagulation of milk by rennet, or acid, and the coagulation of egg albumin by heat. Coagulation is generally the change of an albuminous body into an insoluble modification.

2. The substance or body formed by coagulation.

Coagulative adjective Having the power to cause coagulation; as, a coagulative agent. Boyle.

Coagulator noun That which causes coagulation. Hixley.

Coagulatory adjective Serving to coagulate; produced by coagulation; as, coagulatory effects. Boyle.

Coagulum noun ; plural Coagula . [ Latin See Coagulate , adjective ] The thick, curdy precipitate formed by the coagulation of albuminous matter; any mass of coagulated matter, as a clot of blood.

Coaita (ko*äĭ"tȧ) noun (Zoology) The native name of certain South American monkeys of the genus Ateles , esp. A. paniscus . The black-faced coaita is Ateles ater . See Illustration in Appendix.