complementary

• POS: Adjective
• HYPHEN: com=ple=men=ta=ry

CIDE DICTIONARY

complementary, a. 

 Serving to fill out or to complete; as, complementary numbers.  [1913 Webster]

Complementary colors. See under Color. -- Complementary angles (Math.), two angles whose sum is 90°.

complementary, n. [See Complimentary.].

 One skilled in compliments.  B. Jonson.  [1913 Webster]

OXFORD DICTIONARY

complementary, adj.
1 completing; forming a complement.
2 (of two or more things) complementing each other.

Idiom

complementary angle either of two angles making up 90°. complementary colour a colour that combined with a given colour makes white or black.

Derivative

complementarily adv. complementariness n.

THESAURUS

complementary

analogous, answering, coequal, complemental, completing, completive, completory, consummative, consummatory, correspondent, corresponding, culminative, equipollent, equivalent, filling, fulfilling, homologous, perfective, reciprocal, reciprocative, tantamount

ROGET THESAURUS

complementary

Correlation

N correlation, reciprocalness, reciprocity, reciprocation, mutuality, correlation, interdependence, interrelation, connection, link, association, interchange, exchange, barter, reciprocator, reprocitist, reciprocal, mutual, commutual, correlative, reciprocative, interrelated, closely related, alternate, interchangeable, interdependent, international, complemental, complementary, mutually, mutatis mutandis, vice versa, each other, one another, by turns, reciprocally, happy in our mutual help.

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.