natural classification
In biology, a classification of groups of organisms or objects to show their characteristics and evolutionary relationships with each other; see artificial classification.

Online Dictionary of Invertebrate Zoology. . 2005.

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  • natural classification — see ↑natural system below. • • • Main Entry: ↑natural natural system or natural classification noun A classification of plants and animals according to presumed relationship by descent, distinguished in botany from the artificial system of… …   Useful english dictionary

  • natural classification — A classification system that arranges organisms into groups whose members share many characteristics and reflect as much as possible the biological nature of organisms …   Dictionary of microbiology

  • natural classification — noun a scientific classification according to features which are held to be objectively significant, rather than being selected for convenience …   English new terms dictionary

  • natural — adj. & n. adj. 1 a existing in or caused by nature; not artificial (natural landscape). b uncultivated; wild (existing in its natural state). 2 in the course of nature; not exceptional or miraculous (died of natural causes; a natural occurrence) …   Useful english dictionary

  • natural system — noun : a biological classification based upon morphological and anatomical relationships and affinities considered in the light of phylogeny and embryology; specifically : a system in botany other than the artificial or sexual system established… …   Useful english dictionary

  • Natural language user interface — Natural Language User Interfaces (LUI) are a type of computer human interface where linguistic phenomena such as verbs, phrases and clauses act as UI controls for creating, selecting and modifying data in software applications. In interface… …   Wikipedia

  • Natural Killer T cell — Natural killer T (NKT) cells are a heterogeneous group of T cells that share properties of both T cells and natural killer (NK) cells. Many of these cells recognize the non polymorphic CD1d molecule, an antigen presenting molecule that binds self …   Wikipedia

  • Natural — Nat u*ral (?; 135), a. [OE. naturel, F. naturel, fr. L. naturalis, fr. natura. See {Nature}.] 1. Fixed or determined by nature; pertaining to the constitution of a thing; belonging to native character; according to nature; essential;… …   The Collaborative International Dictionary of English

  • Natural day — Natural Nat u*ral (?; 135), a. [OE. naturel, F. naturel, fr. L. naturalis, fr. natura. See {Nature}.] 1. Fixed or determined by nature; pertaining to the constitution of a thing; belonging to native character; according to nature; essential;… …   The Collaborative International Dictionary of English

  • Natural fats — Natural Nat u*ral (?; 135), a. [OE. naturel, F. naturel, fr. L. naturalis, fr. natura. See {Nature}.] 1. Fixed or determined by nature; pertaining to the constitution of a thing; belonging to native character; according to nature; essential;… …   The Collaborative International Dictionary of English

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