WordReference Random House Unabridged Dictionary of American English © 2026
ac•e•phate
(as′ə fāt′),USA pronunciation n. [Chem.]
- Botany, Chemistrya white solid compound, C4H10NO3PS, used as an insecticide against a wide range of plant pests, including aphids, budworms, and tent caterpillars.
- ace(tyl) + ph(osphor-) + ate2