- a measure of the relative size of two classes expressible as a proportion: the ratio of boys to girls is 2 to 1
- a quotient of two numbers or quantities
See also proportion
WordReference Random House Learner's Dictionary of American English © 2020
ra•tio /ˈreɪʃoʊ, -ʃiˌoʊ/USA pronunciation n.[countable], pl. -tios.WordReference Random House Unabridged Dictionary of American English © 2020
- Mathematicsthe relation between two numbers or amounts, with respect to the number of times the first contains the second:The ratio of 3 to 9 is the same as the ratio of 1 to 3.
proportion:The ratio of acceptances to rejections is very high.
- -ratio- comes from Latin, where it has the meaning "logic;
judgment.'' This meaning is found in such words as: irrational, overrated, rate, ratify, ratio, ration, rational.
ra•tio (rā′shō, -shē ō′),USA pronunciation n., pl. -tios.
- Mathematicsthe relation between two similar magnitudes with respect to the number of times the first contains the second:the ratio of 5 to 2, written 5:2 or 5/2.
- Mathematicsproportional relation;
rate:the ratio between acceptances and rejections.
- [Finance.]the relative value of gold and silver in a bimetallic currency system.
- Latin ratiō a reckoning, account, calculation, derivative (see -tion) of the base of rērī to judge, think
Collins Concise English Dictionary © HarperCollins Publishers::
ratio /ˈreɪʃɪˌəʊ/ n ( pl -tios)
'ratio' also found in these entries:
Bernoulli's theorem - Boltzmann constant - CR - absolute humidity - absorptance - acceleration coefficient - acid test ratio - acoustic impedance - albedo - analogous - analogy - anamorphic lens - angular magnification - anharmonic ratio - anode resistance - antecedent - aperture ratio - arraign - aspect ratio - asymptotic - average - azeotrope - ballistite - bear - bel - birth rate - block coefficient - bulk modulus - camber - capacitance - cephalic index - change - chronon - clipper-built - coefficient of restitution - colon - common ratio - compressibility - compression ratio - compressor - conductance - consequent - consonance - continued proportion - continuously variable transmission - contrast - conversion ratio - correlation ratio - cosecant - cosine