First Known Use: 1660
Dictionary
ratio
noun ra·tio \ˈrā-(ˌ)shō, -shē-ˌō\
: the relationship that exists between the size, number, or amount of two things and that is often represented by two numbers
plural ra·tios
Full Definition of RATIO
1
a : the indicated quotient of two mathematical expressions b : the relationship in quantity, amount, or size between two or more things : proportion
2
: the expression of the relative values of gold and silver as determined by a country's currency laws
See ratio defined for English-language learners
See ratio defined for kids
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Origin of RATIO
Latin, computation, reason — more at reason
Related to RATIO
- Synonyms
- proportion, rate
Other Mathematics and Statistics Terms
Rhymes with RATIO
acid snow, afterglow, aikido, alpenglow, apropos, art deco, art nouveau, audio, Baguio, Bamako, barrio, bay window, Bergamo, bibelot, Bilbao, black widow, blow-by-blow, body blow, bone marrow, bordereau, Borneo, bow window, buffalo, Buffalo, bungalow, Bushido, buteo, calico, cameo, cachalot, cembalo, centimo, CEO, chassepot, cheerio, Clemenceau, cogito, comedo, comme il faut, counterflow, Cupid's bow, curaçao, Curaçao, curassow, curio, daimyo, danio, Delano, Diderot, do-si-do, domino, dynamo, embryo, entrepôt, Erato, escargot, Eskimo, extrados, fabliau, folio, French window, fricandeau, furbelow, gigolo, golden glow, go-no-go, grass widow, guacharo, hammer throw, hammertoe, haricot, heel-and-toe, hetero, high and low, HMO, Holy Joe, horror show, Idaho, in a row, indigo, in escrow, in the know, Jericho, kakapo, latigo, little toe, long-ago, Longfellow, Maceió, Maginot, Manchukuo, medico, Mexico, mistletoe, modulo, Monaco, Navajo, NCO, nuncio, oleo, olio, on tiptoe, Oreo, overflow, overgrow, overthrow, ovolo, Pamlico, Papago, paseo, picaro, piccolo, Pierrot, polio, pomelo, pompano, portico, PPO, Prospero, proximo, quid pro quo, radio, raree-show, Richard Roe, Rochambeau, rococo, rodeo, Romeo, rose window, round window, saddlebow, Sapporo, sapsago, Scapa Flow, Scipio, Scorpio, semipro, show window, sloppy joe, so-and-so, SRO, standing O, status quo, stereo, stop-and-go, studio, subito, tallyho, tangelo, Taranto, tic-tac-toe, TKO, to-and-fro, Tokyo, tombolo, touch-and-go, tournedos, tremolo, tuckahoe, tupelo, UFO, ultimo, undergo, undertow, Veneto, vertigo, vibrio, video, virago, vireo, Zhangjiakou, zydeco
RATIOS Defined for Kids
ratio
noun ra·tio \ˈrā-shō, -shē-ˌō\
plural ra·tios
Definition of RATIO for Kids
: the relationship in number or quantity between two or more things <the ratio of teachers to students>
Medical Dictionary
ratio
noun ra·tio \ˈrā-(ˌ)shō, -shē-ˌō\
plural ra·tios
Medical Definition of RATIO
: the relationship in quantity, amount, or size between two or more things—see sex ratio
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