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Definition of parasitism - 6 dictionary results

par⋅a⋅sit⋅ism

[par-uh-sahy-tiz-uhm, -si-]
–noun
1. Biology. a relation between organisms in which one lives as a parasite on another.
2. a parasitic mode of life or existence.
3. Pathology. a diseased condition due to parasites.
4. (in some totalitarian countries)
a. unemployment or refusal to work.
b. employment in work considered nonessential by the state.

Origin:
1605–15; parasite + -ism
par·a·sit·ism   (pār'ə-sĭ-tĭz'əm, -sī-)   
n.  
  1. The characteristic behavior or mode of existence of a parasite or parasitic population.
  2. Parasitosis.

Parasitism

Par"a*si`tism\, n. [Cf. F. parasitisme.]

1. The state or behavior of a parasite; the act of a parasite. "Court parasitism." --Milton.

2. (Bot. & Zo["o]l.)The state of being parasitic.

Main Entry: par·a·sit·ism
Pronunciation: 'par-&-s&-"tiz-&m, -"sIt-"iz-
Function: noun
1 : an intimate associationbetween organisms of two or more kinds; especially : one in which a parasite obtains benefits from a host which it usually injures
2 : PARASITOSIS

parasitism par·a·sit·ism (pār'ə-sĭ-tĭz'əm, -sī-)
n.
A symbiotic relationship in which one species, the parasite, benefits at the expense of the other, the host.

parasitism   (pār'ə-sĭ-tĭz'əm)  Pronunciation Key 
A symbiotic relationship in which one organism (the parasite) benefits and the other (the host) is generally harmed. Parasites derive nutrition from their host and may also gain other benefits such as shelter and a habitat in which to grow and reproduce. See more at parasite. Compare amensalism, commensalism, mutualism.
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