Rhom`bo*ga"noid (?), n. [Rhomb + ganoid.] (Zoöl.) A ganoid fish having
rhombic enameled scales; one of the Rhomboganoidei.
||Rhom`bo*ga*noi"de*i (?), n. pl. [NL.] (Zoöl.) Same as Ginglymodi.
Rhom"bo*gene (?), n. [Rhomb + root of Gr. &?;&?;&?; to be born.]
(Zoöl.) A dicyemid which produces infusorialike embryos; -- opposed to
nematogene. See Dicyemata. [Written also rhombogen.]
Rhom`bo*he"dral (?), a. (Geom. & Crystallog.) Related to the
rhombohedron; presenting the form of a rhombohedron, or a form
derivable from a rhombohedron; relating to a system of forms including
the rhombohedron and scalenohedron.
Rhombohedral iron ore (Min.) See Hematite. -- Rhombohedral system
(Crystallog.), a division of the hexagonal system embracing the
rhombohedron, scalenohedron, etc.
Rhom`bo*hed"ric (?), a. (Geom. & Crystallog.) Rhombohedral.
Rhom`bo*he"dron (?), n. [NL., fr. Gr. &?;&?;&?; rhomb + &?;&?;&?; seat,
base.] (Geom. & Crystallog.) A solid contained by six rhomboids; a
parallelopiped.
Rhom"boid (rm"boid), n. [Gr. &?;&?;&?; rhomboidal; &?;&?;&?; rhomb +
e'i^dos shape: cf. F. rhomboïde.] (Geom.) An oblique-angled
parallelogram like a rhomb, but having only the opposite sides equal,
the length and with being different.
Rhom"boid (rm"boid), a. Same as Rhomboidal.
Rhom*boid"al (?), a. [Cf. F. rhomboïdal.] Having, or approaching, the
shape of a rhomboid.
Rhom*boid"es (?), n. A rhomboid. [R.] Milton.
Rhom`boid-o"vate (?), a. Between rhomboid and ovate, or oval, in shape.
Rhomb" spar` (?). (Min.) A variety of dolomite.
Rhom"bus (?), n. [L.] Same as Rhomb, 1.
Rhon`chal (?), a. (Med.) Rhonchial.
Rhon"chi*al (?), a. (Med.) Of or pertaining to a rhonchus; produced by
rhonchi.
Rhonchial fremitus. [L. fremitus a dull roaring or murmuring.] (Med.) A
vibration of the chest wall that may be felt by the hand laid upon its
surface. It is caused in the production of rhonchi in the bronchial
tubes.
Rhon*chis"o*nant (?), a. [L. rhonchus a snoring + sonans, p. pr. of
sonare to sound.] Making a snorting noise; snorting. [R.]
||Rhon"chus (?), n.; pl. Rhonchi (#). [L., a snoring, a croaking.]
||(Med.) An adventitious whistling or snoring sound heard on
||auscultation of the chest when the air channels are partially
||obstructed. By some writers the term rhonchus is used as equivalent
||to râle in its widest sense. See Râle.
Rho*pal"ic (?), a. [Gr. &?;&?;&?;&?; club-shaped; fr. &?;&?;&?; a club:
cf. F. rhopalique.] (Pros.) Applied to a line or verse in which each
successive word has one more syllable than the preceding.
||Rho*pa"li*um (?), n.; pl. Rhopalia (#). [NL.] (Zoöl.) One of the
||marginal sensory bodies of medusæ belonging to the Discophora.
||Rhop`a*loc"e*ra (?), n. pl. [NL., from Gr. &?;&?;&?; a club +
||&?;&?;&?; ahorn.] (Zoöl.) A division of Lepidoptera including all the
||butterflies. They differ from other Lepidoptera in having club-shaped
||antennæ.
Rho"ta*cism (?), n. [Gr. "rwtaki`zein to use the letter r (ρ)
overmuch: cf. F. rhotacisme.] An oversounding, or a misuse, of the
letter r; specifically (Phylol.), the tendency, exhibited in the
Indo-European languages, to change s to r, as wese to were.
Rhu"barb (?), n. [F. rhubarbe, OF. rubarbe, rheubarbe, reubarbare,
reobarbe, LL. rheubarbarum for rheum barbarum, Gr. &?;&?;&?; (and
&?;&?;) rhubarb, from the river Rha (the Volga) on whose banks it grew.
Originally, therefore, it was the barbarian plant from the Rha. Cf.
Barbarous, Rhaponticine.] 1. (Bot.) The name of several large perennial
herbs of the genus Rheum and order Polygonaceæ.
2. The large and fleshy leafstalks of Rheum Rhaponticum and other
species of the same genus. They are pleasantly acid, and are used in
cookery. Called also pieplant.
3. (Med.) The root of several species of Rheum, used much as a
cathartic medicine.
Monk's rhubarb. (Bot.) See under Monk. -- Turkey rhubarb (Med.), the
roots of Rheum Emodi.
Rhu"barb*y (?), a. Like rhubarb.
Rhumb (?), n. [F. rumb, Sp. rumbo, or Pg. rumbo, rumo, probably fr. Gr.
&?;&?;&?; a magic wheel, a whirling motion, hence applied to a point of
the compass. See Rhomb.] (Navigation) A line which crosses successive
meridians at a constant angle; -- called also rhumb line, and
loxodromic curve. See Loxodromic.
To sail on a rhumb, to sail continuously on one course, following a
rhumb line.
||Rhus (?), n. [L., sumac, fr. Gr. &?;&?;&?;.] (Bot.) A genus of shrubs
||and small treets. See Sumac.
Rhus"ma (?), n. [See Rusma.] A mixtire of caustic lime and orpiment, or
tersulphide of arsenic, -- used in the depilation of hides. Knight.
Rhyme (?), n. [OE. ryme, rime, AS. rm number; akin to OHG. rm number,
succession, series, G. reim rhyme. The modern sense is due to the
influence of F. rime, which is of German origin, and originally the
same word.] [The Old English spelling rime is becoming again common.
See Note under Prime.] 1. An expression of thought in numbers, measure,
or verse; a composition in verse; a rhymed tale; poetry; harmony of
language. "Railing rhymes." Daniel.
A ryme I learned long ago.
Chaucer.
He knew Himself to sing, and build the lofty rime.
Milton.
2. (Pros.) Correspondence of sound in the terminating words or
syllables of two or more verses, one succeeding another immediately or
at no great distance. The words or syllables so used must not begin
with the same consonant, or if one begins with a vowel the other must
begin with a consonant. The vowel sounds and accents must be the same,
as also the sounds of the final consonants if there be any.
For rhyme with reason may dispense, And sound has right to govern
sense.
Prior.
3. Verses, usually two, having this correspondence with each other; a
couplet; a poem containing rhymes.