单词 | tardigrade |
释义 | tardigrade[ tahr-di-greyd ] / ˈtɑr dɪˌgreɪd / nounAlso called bear animalcule, water bear. any microscopic, chiefly herbivorous invertebrate of the phylum Tardigrada, living in water, on mosses, lichens, etc. adjectivebelonging or pertaining to the phylum Tardigrada. slow in pace or movement. Origin of tardigradeFirst recorded in 1615–25, tardigrade is from the Latin word tardigradus slow-paced. See tardy, -grade Words nearby tardigradetar boy, tarbrush, Tarde, Tardenoisian, Tardieu, tardigrade, tardiness, tardive, tardive cyanosis, tardive dyskinesia, tardo Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for tardigradetardigrade / (ˈtɑːdɪˌɡreɪd) / nounany minute aquatic segmented eight-legged invertebrate of the phylum Tardigrada, related to the arthropods, occurring in soil, ditches, etcPopular name: water bear adjectiveof, relating to, or belonging to the Tardigrada Word Origin for tardigradeC17: via Latin tardigradus, from tardus sluggish + gradī to walk 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 tardigradetardigrade [ tär′dĭ-grād′ ] Any of various slow-moving, minute invertebrates of the phylum Tardigrada. Tardigrades have a head and four fused body segments, each of which has a pair of stubby legs ending in claws. They live in water, damp moss, flower petals, or sand, and are usually 1 mm (0.04 inches) or less in size. Tardigrades are able to resist extremely low temperature, pressure, and humidity, and go into dormant states for months or years. They are believed to be intermediate in evolutionary development between annelids and arthropods. Also called water bear The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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