| 单词 | oligotrophic |
| 释义 | oligotrophic[ ol-i-goh-trof-ik, -troh-fik ] / ˌɒl ɪ goʊˈtrɒf ɪk, -ˈtroʊ fɪk / adjective Ecology.(of a lake) characterized by a low accumulation of dissolved nutrient salts, supporting but a sparse growth of algae and other organisms, and having a high oxygen content owing to the low organic content. Compare eutrophic (def. 2). Origin of oligotrophicFirst recorded in 1925–30; oligo- + trophic Words nearby oligotrophicoligoria, oligosaccharide, oligospermia, oligosynaptic, oligotrophia, oligotrophic, oligotrophy, oligozoospermia, oliguria, Ólimbos, Olin Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for oligotrophicoligotrophic / (ˌɒlɪɡəʊˈtrɒfɪk) / adjective(of lakes and similar habitats) poor in nutrients and plant life and rich in oxygenCompare eutrophic Derived forms of oligotrophicoligotrophy (ˌɒlɪˈɡɒtrəfɪ), nounWord Origin for oligotrophicC20: from oligo- + Greek trophein to nourish + -ic 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 oligotrophicoligotrophic [ ŏl′ĭ-gō-trō′fĭk, -trŏf′ĭk, ō′lĭ- ] Lacking in plant nutrients such as phosphates, nitrates, and organic matter, and consequently having few plants and a large amount of dissolved oxygen throughout. Used of a lake, pond, or stream. Compare dystrophic eutrophic. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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