- hemiparasite [hem΄i par′ə sīt΄]n.1. Zool. an organism that may be either free-living or parasitic; facultative parasite2. Bot. a parasitic plant, as the mistletoe, which carries on some photosynthesis but obtains a portion of its food, water, or minerals from a host planthemiparasitic [hem΄i par΄əsit′ik]adj.
English World dictionary. V. Neufeldt. 2014.