Also found in: Dictionary, Thesaurus, Legal, Acronyms, Encyclopedia, Wikipedia.
Related to intermediate host: paratenic host
1. an animal or plant that harbors and provides sustenance for another organism (the parasite).
2. the recipient of an organ or other tissue derived from another organism (the donor).
accidental host one that accidentally harbors an organism that is not ordinarily parasitic in the particular species.
definitive host (final host) a host in which a parasite attains sexual maturity.
intermediate host a host in which a parasite passes one or more of its asexual stages; usually designated first and second, if there is more than one.
paratenic host a potential or substitute intermediate host that serves until the appropriate definitive host is reached, and in which no development of the parasite occurs; it may or may not be necessary to the completion of the parasite's life cycle.
host of predilection the host preferred by a parasite.
primary host definitive host.
reservoir host an animal (or species) that is infected by a parasite, and which serves as a source of infection for humans or another species.
secondary host intermediate host.
transfer host one that is used until the appropriate definitive host is reached, but is not necessary to completion of the life cycle of the parasite.
in·ter·me·di·ate host, intermediary host
1. one in which larval or developmental stages occur;
2. a host through which a microorganism can pass or which contains an asexual stage of a parasite.
Synonym(s): secondary host
An organism in or on which a parasite develops to an adult but not sexually mature stage.
any animal in which the larval or intermediate stage of a parasite develops but does not sexually reproduce. Certain snails are intermediate hosts for liver flukes and schistosomes. Humans are intermediate hosts for malaria parasites. Also called secondary host. Compare dead-end host, definitive host, reservoir host. See also host.
in·ter·me·di·ate host, intermediary host (in'tĕr-mē'dē-ăt hōst, in'tĕr-mē'dē-ar-ē)
1. One in which larval or developmental stages occur.
2. A host through which a microorganism can pass or contains an asexual stage of a parasite.
intermediate hostany host upon which a parasite spends that part of its life cycle in which it is not sexually active.
1. between; intervening; resembling, in part, each of two extremes.
2. a substance formed in a chemical process that is essential to formation of the end-product of the process.
intermediate cell mass
intracellular protein fibers which are part of the cytoskeleton in eukaryotic cells.
especially in parasitology, a host in which the parasite undergoes a stage, usually the larval or nonsexual stage, in its development. The host may be an insect vector which also acts as the transmitting medium, or another insect or animal species which is a passive enhancer, the infection being spread by other means.
see zonula adherens.
mesoderm located just lateral to the somites, uniting the paraxial and lateral plate mesoderm.
intermediate sheep footrot
less underrunning of horn and less likelihood of resulting in chronic lesions than in virulent footrot.