meaning of parasitical
1. Of the nature of a parasite; fawning for food or favors; sycophantic.
2. Of or pertaining to parasites; living on, or deriving nourishment from, some other living animal or plant. See Parasite, 2 & 3.
3. of plants or persons; having the nature or habits of a parasite or leech; living off another; "a wealthy class parasitic upon the labor of the masses"; "parasitic vines that strangle the trees"; "bloodsucking blackmailer"; "his indolent leechlike
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