CITRIC a.
citron or lemon; as, citric acid. Citric acid (Chem.), an organic acid, C3H4OH.(CO2H)3, extracted from lemons, currants, gooseberies, etc., as a white crystalline substance, having a pleasant sour taste.
CLACK n.
ck dish, a dish with a movable lid, formerly carried by beggars, who clacked the lid to attract notice. Shak. Clack door (Mining), removable cover of the opening through which access is had to a pump valve. -- Clack valve (Mach.), a valve; esp. one hinged at one edge, which, when raised from its seat, falls with a cla…
CLOSE a.
Uttered with a relatively contracted opening of the mouth, as certain sounds of e and o in French, Italian, and German; -- opposed to open. Close borough. See under Borough. -- Close breeding. See under Breeding. -- Close communion, communion in the Lord's supper, restricted to those who have received baptism by imme…
COHESION n.
That from of attraction by which the particles of a body are united throughout the mass, whether like or unlike; -- distinguished from adhesion, which unites bodies by their adjacent surfaces. Solids and fluids differ in the degree of cohesion, which, being increased, turns a fluid into a solid. Arbuthnot.…