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All Words Glossary

Glossary of Biological Terms
beginning with letter H
Browse the Biological Glossary
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haustorium Tweet Definition of haustorium Like Definition of haustorium on Facebook
noun (haustoria)
  1. A root of a parasitic plant modified to take nourishment from its host.
heliotropic Tweet Definition of heliotropic Like Definition of heliotropic on Facebook
adjective
  1. Exhibiting heliotropism
heliotropism Tweet Definition of heliotropism Like Definition of heliotropism on Facebook
noun
  1. The property of some plants of turning under the influence of light; either positively (towards the light) or negatively (away from the light)
helminthoid Tweet Definition of helminthoid Like Definition of helminthoid on Facebook
adjective
  1. (medicine) vermicular; wormlike
herpetology Tweet Definition of herpetology Like Definition of herpetology on Facebook
nounher"pe"tol"o"gy
  1. the branch of biology dealing with reptiles (Reptilia)] or amphibians.
heterogenous Tweet Definition of heterogenous Like Definition of heterogenous on Facebook
adjective
  1. (genetics) derived from a different individual or species
    1. (alternative spelling of, heterogeneous)
heterologous Tweet Definition of heterologous Like Definition of heterologous on Facebook
adjective
  1. Having different relationships or different elements
  2. (biology) Of, or relating to different species
  3. heterologous blood donation
histologist Tweet Definition of histologist Like Definition of histologist on Facebook
noun
  1. (biology) One who study, studies histology.
histology Tweet Definition of histology Like Definition of histology on Facebook
noun
  1. (biology) The study of the structure, chemical composition and function of the tissue or tissue systems of plants and animals
holotype Tweet Definition of holotype Like Definition of holotype on Facebook
noun
  1. The single physical example (or illustration) of an organism, known to be used when the taxon was formally described.
homogenous Tweet Definition of homogenous Like Definition of homogenous on Facebook
adjective
  1. (biology) Having the same genetic structure; exhibiting homogeny
    1. Having the same consistency and contents throughout; uniform or homogeneous
homogeny Tweet Definition of homogeny Like Definition of homogeny on Facebook
noun
  1. (biology) Similarity in structure, though of different function, because of genetic relationships
homonym Tweet Definition of homonym Like Definition of homonym on Facebook
noun
  1. A word that sounds or is spelled the same as another word but has a different meaning.
homotypic Tweet Definition of homotypic Like Definition of homotypic on Facebook
adjective
  1. (botany) literally "with the same type". In botanical nomenclature a homotypic synonym (or nomenclatural synonym) is a synonym that comes into being through a nomenclatural act
  1. when a taxon gets a new name, without being included in another taxon (of the same rank). The old name becomes a homotypic synonym of the new name.
  2. when a new name for a taxon is coined without displacing the existing name, the new name becomes a homotypic synonym.
    :The zoological equivalent is "objective synonym".
homozygous Tweet Definition of homozygous Like Definition of homozygous on Facebook
adjective
  1. of an organism in which both copies of a given gene have the same allele

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