- (of a ratio or proportion) Nine-to-one; (in 1729 quot.) imprecisely, with any number of aliquot parts over.
- (construed with to) Nine times greater or larger than.
- Nine times as great or as numerous.
- (geometry, rare, of an arc)
- (rare, of a series of numbers) Proceeding by powers of nine with exponents in integral succession (i.e.: 91, 92, 93, 94... = 9, 81, 729, 6,561...).
- (rare) Make nine times greater; multiply by nine.