Hy"po, n. [Abbrev. from hyposulphite.] (Photog.) Sodium hyposulphite,
or thiosulphate, a solution of which is used as a bath to wash out the
unchanged silver salts in a picture. [Colloq.]
Hy`po*a"ri*an (?), a. (Anat.) Of or pertaining to a hypoarion.
||Hy`po*a"ri*on (?), n.; pl. Hypoaria (#). [NL., fr. Gr. "ypo` beneath
||+ &?; a little egg.] (Anat.) An oval lobe beneath each of the optic
||lobes in many fishes; one of the inferior lobes. Owen.
Hy"po*blast (?), n. [Pref. hypo- + -blast.] (Biol.) The inner or lower
layer of the blastoderm; -- called also endoderm, entoderm, and
sometimes hypoderm. See Illust. of Blastoderm, Delamination, and
Ectoderm.
Hy`po*blas"tic (?), a. (Biol.) Relating to, or connected with, the
hypoblast; as, the hypoic sac.
Hy*pob"o*le (?), n. [Gr. &?; a throwing under, a suggesting; &?; under
+ &?; to throw.] (Rhet.) A figure in which several things are mentioned
that seem to make against the argument, or in favor of the opposite
side, each of them being refuted in order.
Hy`po*bran"chi*al (?), a. [Pref. hypo- + branchial.] (Anat.) Pertaining
to the segment between the basibranchial and the ceratobranchial in a
branchial arch. -- n. A hypobranchial bone or cartilage.
{ Hy"po*carp (?), ||Hy`po*car"pi*um (?), } n. [NL. hypocarpium, fr. Gr.
"ypo` beneath + &?; fruit.] (Bot.) A fleshy enlargement of the
receptacle, or for the stem, below the proper fruit, as in the cashew.
See Illust. of Cashew.
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Hy`po*car`po*ge"an (?), a. [Pref. hypo- + Gr. &?; fruit + &?; earth.]
(Bot.) Producing fruit below the ground.
Hyp"o*caust (?), n. [L. hypocaustum, Gr. &?;; &?; under + &?; to burn:
cf. F. hypocauste.] (Anc. Arch.) A furnace, esp. one connected with a
series of small chambers and flues of tiles or other masonry through
which the heat of a fire was distributed to rooms above. This
contrivance, first used in bath, was afterwards adopted in private
houses.
Hy`po*chlo"rite (?), n. (Chem.) A salt of hypochlorous acid; as, a
calcium hypochloride.
Hy`po*chlo"rous (?), a. [Pref. hypo- + chlorous.] (Chem.) Pertaining
to, or derived from, chlorine having a valence lower than in chlorous
compounds.
Hypochlorous acid (Chem.), an acid derived from chlorine, not known in
a pure state, but forming various salts, called hypochlorites.
Hy`po*chon"dres (?), n. pl. [F. hypocondres, formerly spely
hypochondres.] The hypochondriac regions. See Hypochondrium.
Hy`po*chon"dri*a (?), n. [NL.] (Med.) Hypochondriasis; melancholy; the
blues.
Hy`po*chon"dri*ac (?), a. [Gr. &?; affocated in the hypochondrium: cf.
F. hypocondriaque, formerly spelt hypochondriaque.] 1. Of or pertaining
to hypochondria, or the hypochondriac regions.