Learn how to say Ratios correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word ratio:
noun (plural ratios)
the quantitative relation between two amounts showing the number of times one value contains or is contained within the other:
the ratio of men’s jobs to women’s is 8 to 1
mid 17th century: from Latin, literally ‘reckoning’, from rat- ‘reckoned’, from the verb reri