Quadridentate
(Quad`ri*den"tate) a. [Quadri- + dentate.] Having four teeth; as, a quadridentate leaf.
Quadriennial
(Quad`ri*en"ni*al) a. Same as Quadrennial.
Quadrifarious
(Quad`ri*fa"ri*ous) a. [L. quadrifarius fourfold, fr. quattuor four: cf. F. quadrifarié. Cf.
Multifarious.] Arranged in four rows or ranks; as, quadrifarious leaves. Loudon.
Quadrifid
(Quad"ri*fid) a. [L. quadrifidus; quattuor four + findere to cleave: cf. F. quadrifide.] Divided,
or deeply cleft, into four parts; as, a quadrifid perianth; a quadrifid leaf.
Quadrifoil
(Quad"ri*foil Quad`ri*fo"li*ate) a. [Quadri- + L. folium leaf.] (Bot.) Four-leaved; having the
leaves in whorls of four.
Quadrifurcated
(Quad`ri*fur"ca*ted) a. [Quadri- + furcated.] Having four forks, or branches.
Quadriga
(||Quad*ri"ga) n.; pl. Quadrigæ [L. See Quadrijugous.] (Rom. Antiq.) A car or chariot drawn
by four horses abreast.
Quadrigeminal
(Quad`ri*gem"i*nal Quad`ri*gem"i*nous) a. [Quadri- + L. gemini twins.] Fourfold; having
four similar parts, or two pairs of similar parts.
Quadrigeminal bodies (Anat.), two pairs of lobes, or elevations, on the dorsal side of the midbrain of
most mammals; the optic lobes. The anterior pair are called the nates, and the posterior the testes.
Quadrigenarious
(Quad`ri*ge*na"ri*ous) a. [L. quadrigeni, quadringeni, four hundred each.] Consisting
of four hundred.
Quadrijugate
(Quad*rij"u*gate) a. Same as Quadrijugous.
Quadrijugous
(Quad*rij"u*gous) a. [L. quadrijugus of a team of four; quattuor four + jugum yoke.]
(Bot.) Pinnate, with four pairs of leaflets; as, a quadrijugous leaf.
Quadrilateral
(Quad`ri*lat"er*al) a. [L. quadrilaterus: cf. F. quadrilatère, quadrilatéral. See Quadri- and
Lateral.] Having four sides, and consequently four angles; quadrangular.
Quadrilateral
(Quad`ri*lat"er*al), n.
1. (Geom.) A plane figure having four sides, and consequently four angles; a quadrangular figure; any
figure formed by four lines.
2. An area defended by four fortresses supporting each other; as, the Venetian quadrilateral, comprising
Mantua, Peschiera, Verona, and Legnano.
Complete quadrilateral (Geom.), the figure made up of the six straight lines that can be drawn through
four points, A, B, C, I, the lines being supposed to be produced indefinitely.
