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 (păr′ə-sĭ-toid′, -sī′toid)
An organism, usually an insect, that lives on or in a host organism during some period of its development and eventually kills its host.

par′a·sit·oid′ adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Zoology) zoology an animal, esp an insect, that is parasitic during the larval stage of its life cycle but becomes free-living when adult
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈpær ə sɪˌtɔɪd, -saɪ-)

1. an insect that hatches within a host, feeds on it during the larval stage, and becomes free-living when the host dies.
2. any organism whose mode of life is intermediate between a parasite and a predator.
3. of or pertaining to a parasitoid.
[1920–25; < New Latin Parasitoïdea (1913); see parasite, -oid]
par′a•sit•oid•ism, n.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
citri with a climate similar to the major citrus production region in the San Joaquin Valley in California, identified 2 species of host specific parasitoids, D.
Hymenopteran parasitoids lay their eggs in the body/abdomen of their hosts and the parasitoid larvae are entirely dependent on the host for their development, as they feed internally in the host to complete their whole development (Godfray, 1995).
Host shifting of native parasitoids onto alien insect pests is not always taken into account in applied entomology.
Egg parasitoids are an important strategy for Integrated Pest Management (IPM) because they promote the reduction of pest population before it can damage the crops (Bale, Lenteren, & Bigler 2008).
Dirhinus giffardii, was reared on artificial diet (solution of 30% honey and 70% water), the food (cotton impregnated with honey and water) given to the Dirhinus giffardii presents in the cages, and these wigs were washed daily and fresh diet were offered to the parasitoids.
A diversity of four parasitoids in control populations of the pine processionary moth was identified: Baryscapusservadeii, Ooencyrtuspityocampae and Trichogrammaembryophagum encountered in three cedar forests (Chrea, Chelia and Theniet El-Had).
Therefore, with the awareness of the damage produced by recurrent chemical usage, biological control utilizing parasitoids, may offer a promising and safe solution for managing the Pseudococcidae infestations in vines.
To resolve the above problems, new environmental friendly methods to control the insect damages have become of interest to researchers; biological control of pests using parasitoids or predators is an example (Scholler et al, 1997).
In northeast China, they discovered three natural enemies--tiny parasitic wasps, or "parasitoids." One of the wasps, Oobius agrili, attacks EAB eggs.