1. (

• parasitic ,
• parasitical

) relating to or caused by parasites; "parasitic infection" ;

2. (

• parasitic ,
• parasitical ,
• leechlike ,
• bloodsucking

) 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 existence" ;