Converted (a fat) into soap

Wiktionary Word definitions in Wiktionary
Treated by saponification v (en-past of: saponify )

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Saponify \Sa*pon"i*fy\, v. t. [imp. & p. p. Saponified ; p. pr. & vb. n. Saponifying .] [L. sapo, -onis, soap + -fy: cf. F. saponifier.] To convert into soap, as tallow or any fat; hence (Chem.), to subject to any similar process, as that which ethereal ...

WordNet Word definitions in WordNet
See saponify