phototonic
n noun Biology.
1.
the normal condition of sensitiveness to light in organisms or their organs.
2.
the irritability exhibited by cytoplasm when exposed to light of a certain intensity.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Link To phototonic
Collins
World English Dictionary
phototonus (fəʊˈtɒtənəs) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —n | |
| the condition of plants that enables them to respond to the stimulus of light | |
| [C19: from | |
| phototonic | |
| —adj | |
00:10
Phototonic
is always a great word to know.
So is bezoar. Does it mean:
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| phototonus (fəʊˈtɒtənəs) | |
| —n | |
| the condition of plants that enables them to respond to the stimulus of light | |
| [C19: from | |
| phototonic | |
| —adj | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary
phototonus pho·tot·o·nus (fō-tŏt'n-əs)
n.
The state of being sensitive to or irritated by light.
pho'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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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
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