SUBTILIZE Meaning of SUBTILIZE in English v. (also -ise) 1. tr. a make subtle. b elevate; refine. 2 intr. (usu. foll. by upon) argue or reason subtly. Derivatives: subtilization n. Etymology: F subtiliser or med.L subtilizare (as SUBTLE) Oxford English vocab. Оксфордский английский словарь. 2012