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See more synonyms for parasitic on Thesaurus.com
  1. of, relating to, or characteristic of parasites.
  2. (of diseases) due to parasites.
  3. Phonetics. excrescent(def 2).
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Sometimes par·a·sit·i·cal.

Origin of parasitic

1620–30; < Latin parasīticus < Greek parasītikós. See parasite, -ic
Related formspar·a·sit·i·cal·ly, adverbpar·a·sit·i·cal·ness, nounan·ti·par·a·sit·ic, noun, adjectivean·ti·par·a·sit·i·cal, adjectivean·ti·par·a·sit·i·cal·ly, adverbnon·par·a·sit·ic, adjectivenon·par·a·sit·i·cal, adjectivenon·par·a·sit·i·cal·ly, adverbpseu·do·par·a·sit·ic, adjectiveun·par·a·sit·ic, adjectiveun·par·a·sit·i·cal, adjectiveun·par·a·sit·i·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for non-parasitic

Historical Examples

  • A vast number of non-parasitic insects are injurious to man and beast.


    T. Spencer Cobbold

  • Subsequently they may continue to live a brief period externally in a non-parasitic condition.

  • In this connection it is important to bear in mind that the nearest relatives of the koel are non-parasitic.

    Birds of the Plains

    Douglas Dewar

  • This is equivalent to calling them non-parasitic parasites, an expression which looks very like a contradiction of terms.


    T. Spencer Cobbold

  • The Australian specialists agreed that the malady was non-parasitic, and that, therefore, it must be nervous.

Word Origin and History for non-parasitic



1620s, from Latin parasiticus, from Greek parasitikos "of or pertaining to a parasite; the trade of a parasite," from parasitos (see parasite). Biological sense is from 1731. Related: Parasitical, 1570s in reference to toadies; from 1640s in the biological sense.

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Online Etymology Dictionary, © 2010 Douglas Harper

non-parasitic in Medicine


  1. Of, relating to, or characteristic of a parasite.
  2. Caused by a parasite.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.