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Definition of Photonegative
1. Adjective. (biology) having a negative phototropic or phototactic response; repelled by light ¹
¹ Source: wiktionary.com
Definition of Photonegative
1. [adj]
Lexicographical Neighbors of Photonegative
Literary usage of Photonegative
Below you will find example usage of this term as found in modern and/or classical literature:
1. Scientific papers of the Bureau of Standards by United States National Bureau of Standards (1922)
"This phenomenon appears to be rather rare, hence it seemed desirable to search
for additional samples exhibiting the photonegative reaction. ..."
2. A New Cadmium-vapor Arc Lamp by Frederick John Bates (1921)
"This type of response is said to be "photonegative. ... HISTORICAL DATA OH
Photonegative SENSITIVITY A photonegative action in certain samples of selenium ..."
3. Proceedings of the American Philosophical Society Held at Philadelphia for by American Philosophical Society (1922)
"The amoeba creeps away from a source of illumination, hydra creeps toward it,
sea-anemones are for the most part photonegative, earthworms are positive to ..."
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