Rhizoma
(||Rhi*zo"ma) n.; pl. Rhizomata [NL.] (Bot.) SAme as Rhizome.
Rhizomatous
(Rhi*zo"ma*tous) a. (Bot.) Having the nature or habit of a rhizome or rootstock.
Rhizome
(Rhi*zome") n. [Gr. the mass of roots a stem, race, fr. to make to root, pass., to take root, fr.
a root: cf. F. rhizome.] (Bot.) A rootstock. See Rootstock.
Rhizophaga
(||Rhi*zoph"a*ga) n. pl. [NL.] (Zoöl.) A division of marsupials. The wombat is the type.
Rhizophagous
(Rhi*zoph"a*gous) a. [Gr. a root + to eat.] Feeding on roots; root- eating.
Rhizophora
(||Rhi*zoph"o*ra) n. [NL. See Rhizophorous.] (Bot.) A genus of trees including the mangrove.
See Mangrove.
Rhizophorous
(Rhi*zoph"o*rous) a. [Gr. a root + to bear.] (Bot.) Bearing roots.
Rhizopod
(Rhiz"o*pod) n. (Zoöl.) One of the Rhizopoda.
The rhizopods belonging to the Radiolaria and Foraminifera have been of great geological importance,
especially in the Cretaceous and Tertiary periods. Chalk is mostly made from the shells of Foraminifera.
The nummulites are the principal ingredient of a limestone which is of great extent in Europe and Asia,
and is the material of which some of the pyramids of Egypt are made. The shells are abundant in deepsea
mud, and are mostly minute, seldom larger than a small grain of sand, except in the case of the nummulities,
which are sometimes an inch in diameter.
Rhizopoda
(||Rhi*zop"o*da) n. pl. [NL., fr. Gr. a root + -poda.] (Zoöl.) An extensive class of Protozoa,
including those which have pseudopodia, by means of which they move about and take their food. The
principal groups are Lobosa Helizoa, Radiolaria, and Foraminifera See Protozoa.
Rhizopodous
(Rhi*zop"o*dous) a. (Zoöl.) Of or pertaining to the rhizopods.
Rhizostomata
(||Rhi`zo*stom"a*ta) n. pl. [NL., fr. Gr. a root + a mouth.] (Zoöl.) A suborder of Medusæ
which includes very large species without marginal tentacles, but having large mouth lobes closely united
at the edges. See Illust. in Appendix.
Rhizostome
(Rhiz"o*stome) n. (Zoöl.) One of the Rhizostomata.
Rhizotaxis
(||Rhi`zo*tax"is) n. [NL., fr. Gr. a root + arrangement.] (Bot.) The arrangement of the roots
of plants.
Rhob
(Rhob) n. See 1st Rob.
Rhodammonium
(Rho`dam*mo"ni*um) a. (Chem.) Pertaining to, derived from, or containing, rhodium
and ammonia; — said of certain complex compounds.
Rhodanate
(Rho"da*nate) n. (Chem.) A salt of rhodanic acid; a sulphocyanate. [Obsoles.]
Rhodanic
(Rho*dan"ic) a. [Gr. the rose.] (Chem.) Pertaining to, or designating, an acid (commonly
called sulphocyanic acid) which frms a red color with ferric salts. [Obsoles.]
Rhodeoretin
(Rho`de*o*re"tin) n. [Gr. the rose + resin.] (Chem.) Same as Convolvuln.
Rhodian
(Rho"di*an) a. [L. Rhodius: cf. F. rhodien.] Of or pertaining to Rhodes, an island of the Mediterranean.
— n. A native or inhabitant of Rhodes.
Rhodic
(Rho"dic) a. (Chem.) Of or pertaining to rhodium; containing rhodium.
