purify
v.
early 14c., "free from spiritual pollution," from Old French purefier "purify, cleanse, refine" (12c.), from Latin purificare "to make pure," from purus "pure" (see pure) + root of facere "to make" (see factitious). Meaning "free from extraneous matter" is recorded from mid-15c. Related: Purified; purifying.
〔李〕[pur;-ifyv.] v.使纯净，净化； 提纯； 给……涤罪 ←pur,purg (L purus,purgere)=(to) clean 净化
〔蒋〕[pur纯净，-i-，-fy使] 使纯净，使洁净