| 单词 | hydrophyte |
| 释义 | hydrophyte[ hahy-druh-fahyt ] / ˈhaɪ drəˌfaɪt / nouna plant that grows in water or very moist ground; an aquatic plant. Origin of hydrophyteFirst recorded in 1825–35; hydro-1 + -phyte OTHER WORDS FROM hydrophytehy·dro·phyt·ic [hahy-druh-fit-ik], /ˌhaɪ drəˈfɪt ɪk/, adjectivehy·dro·phyt·ism, nounWords nearby hydrophytehydrophobe, hydrophobia, hydrophobic, hydrophone, hydrophyllaceous, hydrophyte, hydropic, hydropic degeneration, hydroplane, hydroplaner, hydropneumatization Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for hydrophytehydrophyte / (ˈhaɪdrəʊˌfaɪt) / nouna plant that grows only in water or very moist soil Derived forms of hydrophytehydrophytic (ˌhaɪdrəʊˈfɪtɪk), adjectiveCollins 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 hydrophytehydrophyte [ hī′drə-fīt′ ] A plant that grows wholly or partly submerged in water. Because they have less need to conserve water, hydrophytes often have a reduced cuticle and fewer stomata than other plants. Floating leaves have stomata only on their upper surfaces, and underwater leaves generally have no stomata at all. Because water is readily available, hydrophytes also have a reduced root system and less vascular tissue than other plants (which also makes plant parts less dense and helps them float). Hydrophytes tend to have less supportive tissue as well, since they are buoyed by water. Many species of hydrophytes (such as the Eurasian milfoil) have divided leaves that have less resistance to flowing water. The lotus, water lily, and cattail are hydrophytes. Compare mesophyte xerophyte. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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