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Giving an image in correct or normal proportions; giving a flat field of view; as, an orthoscopic eyepiece.

Specifically (Conic Sections), in the ellipse and hyperbola, a third proportional to any diameter and its conjugate, or in the parabola, to any abscissa and the corresponding ordinate.

ke quantities, numbers, etc., into which anything is divided, or of which it is composed; proportional division or ingredient. An homer is the tenth part of an ephah. Ex. xvi. 36. A thought which, quartered, hath but one part wisdom, And ever three parts coward. Shak.

year; annually. -- Per cent, Per centum, by the hundred; in the hundred; -- used esp. of proportions of ingredients, rate or amount of interest, and the like; commonly used in the shortened form per cent. -- Per diem, by the day. [For other phrases from the Latin, see Quotations, Phrases, etc., from Foreign Languages…

A bromide having a higher proportion of bromine than any other bromide of the same substance or series.

A chloride having a higher proportion of chlorine than any other chloride of the same substance or series.

A complete sentence, from one full stop to another; esp., a well-proportioned, harmonious sentence. "Devolved his rounded periods." Tennyson. Periods are beautiful when they are not too long. B. Johnson.

An iodide containing a higher proportion of iodine than any other iodide of the same substance or series.

A disproportionately rapid growth of the upper surface of dorsiventral organs, such as leaves, through the stimulus of exposure to light. Encyc. Brit.

enerally ending in a small spire, -- used to finish a buttress, to constitute a part in a proportion, as where pinnacles flank a gable or spire, and the like. Pinnacles may be considered primarily as added weight, where it is necessary to resist the thrust of an arch, etc. Some renowned metropolis With glistering spire…

who holds more than one ecclesiastical benefice. [Eng.] Of the parochial clergy, a large proportion were pluralists. Macaulay.

An instrument for determining the amount of polarization of light, or the proportion of polarized light, in a partially polarized ray.

ing the same percentage composition (that is, having the same elements united in the same proportion by weight), but different molecular weights; -- often used with with; thus, cyanic acid (CNOH), fulminic acid (C2N2O2H2), and cyanuric acid (C3N3O3H3), are polymeric with each other.

o produce polymers from; to increase the molecular weight of, without changing the atomic proportions; thus, certain acids polymerize aldehyde.

Abounding in people; full of inhabitants; containing many inhabitants in proportion to the extent of the country. Heaven, yet populous, retains Number sufficient to possess her realms. Milton.

me and clay, or sometimes certain natural limestones or chalky clays. It contains a large proportion of clay, and hardens under water.

A rate or proportion estimated at a certain amount for each pound; poundage.

eight, influence, or power, etc.; an outweighing. The mind should . . . reject or receive proportionably to the preponderancy of the greater grounds of probability. Locke. In a few weeks he had changed the relative position of all the states in Europe, and had restored the equilibrium which the preponderance of one pow…

ch the pleading on the other side does not deny. -- Pro rata. Etym: [L. See Prorate.] In proportion; proportion. -- Pro re nata Etym: [L.] (Law), for the existing occasion; as matters are.

In proportion; proportionately; according to the share, interest, or liability of each.