from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Magnified by one and one-half; in a ratio of three to two.
from the GNU version of the Collaborative International Dictionary of English
- adj. Subduplicate of the triplicate; -- a term applied to ratios; thus, a and a' are in the sesquiplicate ratio of b and b', when a is to a' as the square root of the cube of b is to the square root of the cube of b', or a:a'::√b3:√b'3.
from The Century Dictionary and Cyclopedia
- Noting the ratio of a cube to a square: as, the sesquiplicate proportion of the periodical times of the planets.
Surface form sesqui- (“one and a half”) + plicate (“fold”); by analogy with duplicate. (Wiktionary)