1. The relation or proportion of one thing, such as a quantity, to another. See Rate.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• rario,
• raitio,
• patiom,
• atio,
• reaio,
• partio,
• radeio,
• reation,
• stio,
• motio,
• rdaio,
• raiot,
• creatio,
• retios,
• ravi,
• tratior,
• ptio,
• reatio,
• ratious,
• rathor

• raitt,
• RADO,
• rad,
• ratti,
• raid,
• raita,
• radio,
• rat,
• ratty.

The adjective form of the word "ratio" is "rational".

The plural of the "ratio" can be the "ratios".

The singular of the "ratio" can be the "ratio".