Part 28

3. A musical instrument consisting of a series of steam whistles, toned to the notes of the scale, and played by keys arranged like those of an organ. It is sometimes attached to steamboat boilers.

4. (Zo÷l.) A beautiful species of humming bird (Stellula Calliope) of California and adjacent regions.

||Cal`li*op"sis (?), n. [NL., fr. Gr. pref. kalli- (fr. kalo`s beautiful) + 'o`psis appearance.] (Bot.) A popular name given to a few species of the genus Coreopsis, especially to C. tinctoria of Arkansas.

Cal`li*pash" (&?;), n. See Calipash.

Cal`li*pee" (&?;), n. See Calipee.

Cal`li*pers (&?;), n. pl. See Calipers.

Cal`li*sec"tion (?), n. [L. callere to be insensible + E. section.] Painless vivisection; -- opposed to sentisection. B. G. Wilder.

{ Cal`lis*then"ic, a., Cal`lis*then"ics (?), n. } See Calisthenic, Calisthenics.

Cal"li*thump` (?), n. A somewhat riotous parade, accompanied with the blowing of tin horns, and other discordant noises; also, a burlesque serenade; a charivari. [U. S.]

Cal`li*thump"i*an (?), a. Of, pertaining to, or resembling, a callithump. [U. S.]

Cal*lo"san (?), a. (Anat.) Of the callosum.

Cal"lose (?), a. [See Callous.] (Bot.) Furnished with protuberant or hardened spots.

Cal*los"i*ty (?), n.; pl. Callosities (#). [L. callasitas; cf. F. calostÚ.] A hard or thickened spot or protuberance; a hardening and thickening of the skin or bark of a part, eps. as a result of continued pressure or friction.

||Cal*lo"sum (?), n. [NL., fr. callosus callous, hard.] (Anat.) The great band commissural fibers which unites the two cerebral hemispheres. See corpus callosum, under Carpus.

Cal"lot (?), n. A plant coif or skullcap. Same as Calotte. B. Jonson.

Cal"lous (?), a. [L. callosus callous hard, fr. callum, callus, callous skin: cf. F. calleux.] 1. Hardened; indurated. "A callous hand." Goldsmith. "A callous ulcer." Dunglison.

2. Hardened in mind; insensible; unfeeling; unsusceptible. "The callous diplomatist." Macaulay.

It is an immense blessing to be perfectly callous to ridicule. T. Arnold.

Syn. -- Obdurate; hard; hardened; indurated; insensible; unfeeling; unsusceptible. See Obdurate.

-- Cal"lous*ly, adv. -- Cal"lous*ness, n.

A callousness and numbness of soul. Bentley.

Cal"low (?), a. [OE. calewe, calu, bald, AS. calu; akin to D. kaal, OHG. chalo, G. Kuhl; cf. L. calvus.]

1. Destitute of feathers; naked; unfledged.

An in the leafy summit, spied a nest, Which, o'er the callow young, a sparrow pressed. Dryden.

2. Immature; boyish; "green"; as, a callow youth.

I perceive by this, thou art but a callow maid. Old Play .

Cal*low" (?), n. (Zo÷l.) [Named from its note.] A kind of duck. See Old squaw.

Cal"lus (kăl"lŭs), n. [L. See Callous.] 1. (Med.) (a) Same as Callosity. (b The material of repair in fractures of bone; a substance exuded at the site of fracture, which is at first soft or cartilaginous in consistence, but is ultimately converted into true bone and unites the fragments into a single piece.