WordReference Random House Unabridged Dictionary of American English © 2026
es•ter•i•fy
(e ster′ə fī′),USA pronunciation v.t., v.i., -fied, -fy•ing. [Chem.]
es•ter′i•fi′a•ble, adj.
es•ter′i•fi•ca′tion, n.
- Chemistryto convert into an ester.
- ester + -ify 1900–05
es•ter′i•fi•ca′tion, n.