planarian

[ pluh-nair-ee-uhn ]

/ pləˈnɛər i ən /

noun Zoology.

any of various free-swimming, mostly freshwater flatworms of the class Turbellaria, having an undulating or sluglike motion: popular in laboratory studies for the ability to regenerate lost parts.

Origin of planarian

1885–60; <New Latin Planari(a) a flatworm genus (noun use of feminine of Late Latin plānārius level, on level ground; taken to mean “flat”; see plane¹, -ary + -an

Words nearby planarian

plaister, plait, plaiting, plan, planar, planarian, planar process, planate, planation, plan B, plancer

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for planarian

Flat against the stone and not easily perceived may be a chiton, a planarian worm, or a nudibranch.
The Sea-beach at Ebb-tide|Augusta Foote Arnold
The planarian worms that I have just been telling about are monsters.
Natural Wonders|Edwin Tenney Brewster
It is now nearly forty years since the presence of chlorophyl in certain species of planarian worms was recognized by Schultze.
Scientific American Supplement, No. 324, March 18, 1882|Various
These are planarian worms, and though not of prepossessing appearance generally, are extremely interesting animals to study.
Country Walks of a Naturalist with His Children|W. Houghton

Instead, much like the planarian cut in halves, it forms a whole animal, half size.
Natural Wonders|Edwin Tenney Brewster

British Dictionary definitions for planarian

planarian

/ (pləˈnɛərɪən) /

noun

any free-living turbellarian flatworm of the mostly aquatic suborder Tricladida, having a three-branched intestine

Word Origin for planarian

C19: from New Latin Plānāria type genus, from Late Latin plānārius level, flat; see plane 1

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for planarian

planarian

[ plə-nâr′ē-ən ]

Any of various small, chiefly freshwater flatworms of the class Turbellaria, having soft, broad, ciliated bodies shaped like a leaf. Planarians have a mouth on their lower side that is often closer to the tail than the head, and a three-branched digestive cavity. If a planarian is cut into several pieces, each piece can grow into a whole new organism.

单词	planarian
释义	planarian [ pluh-nair-ee-uhn ] / pləˈnɛər i ən / noun Zoology. any of various free-swimming, mostly freshwater flatworms of the class Turbellaria, having an undulating or sluglike motion: popular in laboratory studies for the ability to regenerate lost parts. Origin of planarian 1885–60; <New Latin Planari(a) a flatworm genus (noun use of feminine of Late Latin plānārius level, on level ground; taken to mean “flat”; see plane¹, -ary + -an Words nearby planarian plaister, plait, plaiting, plan, planar, planarian, planar process, planate, planation, plan B, plancer Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for planarian Flat against the stone and not easily perceived may be a chiton, a planarian worm, or a nudibranch. The Sea-beach at Ebb-tide\|Augusta Foote Arnold The planarian worms that I have just been telling about are monsters. Natural Wonders\|Edwin Tenney Brewster It is now nearly forty years since the presence of chlorophyl in certain species of planarian worms was recognized by Schultze. Scientific American Supplement, No. 324, March 18, 1882\|Various These are planarian worms, and though not of prepossessing appearance generally, are extremely interesting animals to study. Country Walks of a Naturalist with His Children\|W. Houghton Instead, much like the planarian cut in halves, it forms a whole animal, half size. Natural Wonders\|Edwin Tenney Brewster British Dictionary definitions for planarian planarian / (pləˈnɛərɪən) / noun any free-living turbellarian flatworm of the mostly aquatic suborder Tricladida, having a three-branched intestine Word Origin for planarian C19: from New Latin Plānāria type genus, from Late Latin plānārius level, flat; see plane 1 Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for planarian planarian [ plə-nâr′ē-ən ] Any of various small, chiefly freshwater flatworms of the class Turbellaria, having soft, broad, ciliated bodies shaped like a leaf. Planarians have a mouth on their lower side that is often closer to the tail than the head, and a three-branched digestive cavity. If a planarian is cut into several pieces, each piece can grow into a whole new organism. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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