Skip to Content
Medical Term:


Pronunciation: ra'she-o

Definition: An expression of the relation of one quantity to another (of a proportion or rate).

[L. ratio (ration-) a reckoning, reason, fr. reor, pp. ratus, to reckon, compute]

See Also: index2, quotient

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.