(Con*cav"i*ty) n.; pl. Concavities [L. concavitas: cf. F. concavité. See Concave.] A concave
surface, or the space bounded by it; the state of being concave.
(Con*ca`vo-con"cave) a. Concave or hollow on both sides; double concave.
1. Concave on one side and convex on the other, as an eggshell or a crescent.
2. (Optics) Specifically, having such a combination of concave and convex sides as makes the focal
axis the shortest line between them. See Illust. under Lens.
(Con*ca*"vous) a. [L. concavus.] Concave. Abp. potter.
(Con*ceal") v. t. [imp. & p. p. Concealed ; p. pr. & vb. n. Concealing.] [OF. conceler,
L. concelare; con- + celareto hide; akin to AS. helan, G. hehlen, E. hele helmet. See Hell, Helmet.]
To hide or withdraw from observation; to cover; to cover or keep from sight; to prevent the discovery of; to
withhold knowledge of.
It is the glory of God to conceal a thing.
Prov. xxv. 2.
Declare ye among the nations, . . . publish and conceal not.
Jer. l. 2.
He which finds him shall deserve our thanks, . . .
He that conceals him, death.
Syn. To hide; secrete; screen; cover; disguise; dissemble; mask; veil; cloak; screen. To Conceal, Hide,
Disguise, Dissemble, Secrete. To hide is the generic term, which embraces all the rest. To conceal
is simply not make known what we wish to keep secret. In the Bible hide often has the specific meaning
of conceal. See 1 Sam. iii. 17, 18. To disguise or dissemble is to conceal by assuming some false
appearance. To secrete is to hide in some place of secrecy. A man may conceal facts, disguise his
sentiments, dissemble his feelings, secrete stolen goods.
Bur double griefs afflict concealing hearts.
Both dissemble deeply their affections.
We have in these words a primary sense, which reveals a future state, and a secondary sense, which
hides and secretes it.
(Con*ceal"a*ble) a. Capable of being concealed.
(Con*cealed") a. Hidden; kept from sight; secreted.
Con*ceal"ed*ly adv. Con*ceal"ed*ness, n.
Concealed weapons (Law), dangerous weapons so carried on the person as to be knowingly or willfully
concealed from sight, a practice forbidden by statute.
(Con*ceal"er) n. One who conceals.
(Con*ceal"ment) n. [OF. concelement.]