It is the hypothetical source of/evidence for its existence is provided by: Greek liparein "to persist, persevere," aleiphein "anoint with oil," lipos "fat;" Old English lifer "liver," læfan "to allow to remain."
1620s, "act or process of sucking," from Late Latin suctionem (nominative suctio), noun of action from past participle stem of Latin sugere "to suck" (see sup (v.2)). As "action produced by a vacuum" from 1650s.
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Harper, D. (n.d.). Etymology of liposuction. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/liposuction