| 单词 | phototonus |
| 释义 | phototonus[ foh-tot-n-uhs ] / foʊˈtɒt n əs / noun Biology.the normal condition of sensitiveness to light in organisms or their organs. the irritability exhibited by cytoplasm when exposed to light of a certain intensity. Origin of phototonusFirst recorded in 1870–75; photo- + tonus OTHER WORDS FROM phototonuspho·to·ton·ic [foh-tuh-ton-ik], /ˌfoʊ təˈtɒn ɪk/, adjectiveWords nearby phototonusphototelegraphy, phototheodolite, phototherapeutics, phototherapy, photothermic, phototonus, phototopography, phototoxic, phototoxin, phototransistor, phototroph Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for phototonusphototonus / (fəʊˈtɒtənəs) / nounthe condition of plants that enables them to respond to the stimulus of light Derived forms of phototonusphototonic (ˌfəʊtəʊˈtɒnɪk), adjectiveWord Origin for phototonusC19: from photo- + Greek tonos tone 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 Medical definitions for phototonusphototonus [ fō-tŏt′n-əs ] n.The state of being sensitive to or irritated by light. Other words from phototonuspho′to•ton′ic (fō′tə-tŏn′ĭk) adj.The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. |
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