proportional

• POS: Adjective, Noun
• HYPHEN: pro=por=tion=al

CIDE DICTIONARY

proportional, a. [L. proportionalis: cf. F. proportionnel.].

•  Having a due proportion, or comparative relation; being in suitable proportion or degree; as, the parts of an edifice are proportional.  Milton.  [1913 Webster]
•  Relating to, or securing, proportion.  Hutton.  [1913 Webster]
•  Constituting a proportion; having the same, or a constant, ratio; as, proportional quantities; momentum is proportional to quantity of matter.  [1913 Webster]

Proportional logarithms, logistic logarithms. See under Logistic. -- Proportional scale, a scale on which are marked parts proportional to the logarithms of the natural numbers; a logarithmic scale. -- Proportional scales, compasses, dividers, etc. (Draughting), instruments used in making copies of drawings, or drawings of objects, on an enlarged or reduced scale.

proportional, n. 

•  Any number or quantity in a proportion; as, a mean proportional.  [1913 Webster]
•  The combining weight or equivalent of an element.  [1913 Webster]

OXFORD DICTIONARY

proportional, adj. & n.
--adj. in due proportion; comparable (a proportional increase in the expense; resentment proportional to his injuries).
--n. Math. each of the terms of a proportion.

Idiom

proportional representation an electoral system in which all parties gain seats in proportion to the number of votes cast for them.

Derivative

proportionality n. proportionally adv.

THESAURUS

proportional

3-D, affinitive, analogical, analogous, appertaining, associative, balanced, commensurable, commensurate, comparable, comparative, compatible, congenial, connective, consistent, contingent, correlated, correlative, corresponding, cubic, dependent, dimensional, distributional, distributive, en rapport, equal, even stephen, fifty-fifty, flat, fourth-dimensional, half, half-and-half, halvers, harmonious, in accordance with, linking, particular, per capita, per head, pertaining, pertinent, pro rata, proportionable, proportionate, proportioned, prorated, reciprocal, referable, referring, related, relating, relational, relative, respective, several, space, space-time, spatial, spatiotemporal, spherical, stereoscopic, superficial, surface, symmetrical, sympathetic, three-dimensional, two-dimensional, volumetric

ROGET THESAURUS

proportional

Relation

N relation, bearing, reference, connection, concern, cognation, correlation, analogy, similarity, affinity, homology, alliance, homogeneity, association, approximation, filiation, interest, relevancy, dependency, relationship, relative position, comparison, ratio, proportion, link, tie, bond of union, relative, correlative, cognate, relating to, relative to, in relation with, referable or referrible to, belonging to, appurtenant to, in common with, related, connected, implicated, associated, affiliated, allied to, en rapport, in touch with, approximative, approximating, proportional, proportionate, proportionable, allusive, comparable, in the same category, like, relevant, applicable, equiparant, relatively, pertinently, thereof, as to, as for, as respects, as regards, about, concerning, anent, relating to, as relates to, with relation, with reference to, with respect to, with regard to, in respect of, while speaking of, a propos of, in connection with, by the way, by the by, whereas, for as much as, in as much as, in point of, as far as, on the part of, on the score of, quoad hoc, pro re nata, under the head of, of, in the matter of, in re, thereby hangs a tale.

Number

N number, symbol, numeral, figure, cipher, digit, integer, counter, round number, formula, function, series, sum, difference, complement, subtrahend, product, multiplicand, multiplier, multiplicator, coefficient, multiple, dividend, divisor, factor, quotient, submultiple, fraction, rational number, surd, irrational number, transcendental number, mixed number, complex number, complex conjugate, numerator, denominator, decimal, circulating decimal, repetend, common measure, aliquot part, prime number, prime, relative prime, prime factor, prime pair, reciprocal, totient, binary number, octal number, hexadecimal number, permutation, combination, variation, election, ratio, proportion, comparison, progression, arithmetical progression, geometrical progression, harmonical progression, percentage, permilage, figurate numbers, pyramidal numbers, polygonal numbers, power, root, exponent, index, logarithm, antilogarithm, modulus, base, differential, integral, fluxion, fluent, numeral, complementary, divisible, aliquot, reciprocal, prime, relatively prime, fractional, decimal, figurate, incommensurable, proportional, exponential, logarithmic, logometric, differential, fluxional, integral, totitive, positive, negative, rational, irrational, surd, radical, real, complex, imaginary, finite, infinite, impossible, numerically, modulo.