单词 | hornwort |
释义 | hornwort[ hawrn-wurt, -wawrt ] / ˈhɔrnˌwɜrt, -ˌwɔrt / nounany aquatic plant of the genus Ceratophyllum, found in ponds and slow streams. Origin of hornwortFirst recorded in 1795–1805; horn + wort2 Words nearby hornworthornstone, hornswoggle, horntail, horn timber, hornworm, hornwort, hornwrack, horny, horny coral, horny layer, hornywink Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for hornwort
British Dictionary definitions for hornworthornwort / (ˈhɔːnˌwɜːt) / nounany aquatic plant of the genus Ceratophyllum, forming submerged branching masses in ponds and slow-flowing streams: family Ceratophyllaceae any of a group of bryophytes belonging to the phylum Anthocerophyta, resembling liverworts but with hornlike sporophytes 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 hornworthornwort [ hôrn′wûrt′, -wôrt′ ] Any of about 100 species of small bryophyte plants belonging to the phylum Anthocerophyta. Unlike liverworts but like mosses, hornwort sporophytes have stomata. The hornwort gametophyte consists of a low thallus, out of which numerous slender, upright sporophytes tipped with sporangia grow. The sporophyte has a meristem that elongates the sporophyte with new growth, a feature that distinguishes the plant from the other bryophytes. The name of the hornworts was suggested by the hornlike appearance of the sporophytes. See more at bryophyte. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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