| 单词 |
Planaria |
| 释义 |
‖ Planaria Zool.|pləˈnɛərɪə|
[mod.L. generic name (Müller 1776), n. use of fem. of L. plānārius adj. (prop. ‘on level ground’, but used as = ‘flat’).]
A genus of the suborder Planarida of turbellarian worms, found in fresh or salt water or in moist earth, and having a flattened form.
Hence plaˈnarian a., belonging or related to the genus Planaria; n., a planarian worm, a flat-worm; planaridan |-ˈærɪdən|, a. belonging to the suborder Planarida; n. a planaridan worm; planariform |-ˈɛərɪfɔːm| a., planarioid |-ˈɛərɪɔɪd| a., of the form of or resembling a planarian.
1819Pantologia, Planaria, in Zoology, a genus of the class vermes. 1855H. Spencer Princ. Psychol. I. iii. viii. 406 The rudimentary eye, consisting, as in the Planaria, of a few pigment grains beneath the integument, may be considered as simply a part of the surface more irritable by light than the rest. 1857Wright in Edinb. New Philos. Jrnl. V. 307 The planarioid larva of Hydractinia. 1858Mayne Expos. Lex., Planarius, planarian. 1876tr. Beneden's Anim. Parasites 46 According to Agassiz, a species of Planarian lives as a free messmate on the lower surface of the Limulus. 1877Huxley Anat. Inv. Anim. iv. 182 The body takes on the ordinary Planarian character. 1900Daily Chron. 30 Oct. 3/4 These Planarians or Turbellarians for the most part slay and kill as much as do their parasitic allies. |
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