Rectangle, rek′tang-gl, n. a four-sided figure with all its angles right angles and its opposite sides equal.—adjs. Rec′tangled, having right angles; Rectang′ūlar, right-angled.—n. Rectangūlar′ity, the state or quality of being right-angled.—adv. Rectang′ūlarly, with, or at, right angles.—n. Rectang′ūlarness.—Rectangular hyperbola, a hyperbola whose asymptotes are at right angles to one another; Rectangular solid, a solid whose axis is perpendicular to its base. [Fr.,—L. rectus, right, angulus, an angle.]
Rectify, rek′ti-fī, v.t. to make straight or right: to adjust: to correct or redress: to purify by repeated crystallisation or sublimation, or by distillations: (math.) to determine the length of a curve included between two limits: to prepare a sun-dial for an observation:—pa.t. and pa.p. rec′tified.—adj. Rectifī′able, that may be rectified or set right.—ns. Rectificā′tion, the act of rectifying or setting right: the process of refining any substance by repeated distillation: rectification of a globe, its adjustment preparatory to the solution of a proposed problem; Rec′tifier, one who corrects: one who refines a substance by repeated distillation.—Rectify the course of a vessel, to determine its true course from indications of the ship's compass, and allowing for magnetic variations, &c.; Rectify the globe, to bring the sun's place in the ecliptic on a globe to the brass meridian. [Fr.,—L. rectus, straight, facĕre, to make.]
Rectigrade, rek′ti-grād, adj. walking straight forward. [L. rectus, straight, gradi, to step.]
Rectilineal, rek-ti-lin′ē-al, adj. bounded by straight lines: straight—also Rectilin′ear.—adv. Rectilin′eally.—n. Rectilinear′ity, the state or quality of being right-lined.—adv. Rectilin′early, in a right line.—n. Rectilin′earness. [L. rectus, straight, linea, a line.]
Rectinerved, rek′ti-nervd, adj. (bot.) straight or parallel nerved.
Rection, rek′shun, n. (gram.) the influence of a word in regard to the number, case, &c. of another word in a sentence.
Rectipetality, rek-ti-pe-tal′i-ti, n. (bot.) the natural tendency of stems to grow in a straight line.
Rectirostral, rek′ti-ros′tral, adj. having a straight bill. [L. rectus, straight, rostrum, a beak.]
Rectiserial, rek-ti-sē′ri-al, adj. placed in a straight line: (bot.) arranged in one or more straight ranks.
Rectitis, rek′tī-tis, n. inflammation of the rectum.—adj. Rectit′ic.