phototropic

[ foh-tuh-trop-ik, -troh-pik ]

/ ˌfoʊ təˈtrɒp ɪk, -ˈtroʊ pɪk /

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adjective Botany.

growing toward or away from the light.

taking a particular direction under the influence of light.

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Question 1 of 7

Which sentence is correct?

His boss, whom he admires, is waiting to meet with him about the big project.

His boss, who he admires, is waiting to meet with him about the big project.

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Origin of phototropic

First recorded in 1895–1900; photo- + -tropic

OTHER WORDS FROM phototropic

pho·to·trop·i·cal·ly, adverb

Words nearby phototropic

phototoxic, phototoxin, phototransistor, phototroph, phototrophic bacteria, phototropic, phototropism, phototropy, phototube, phototype, phototypeset

How to use phototropic in a sentence

For the past decade, he has used the phototropic properties of cyanobacteria to produce images in Petri dishes.
The Deadliest Art Ever|Jaimie Etkin|May 31, 2010|DAILY BEAST
Thus the leaflets of Mimosa pudica acted on by light from above fold upwards, the phototropic effect being positive.
Life Movements in Plants, Volume II, 1919|Sir Jagadis Chunder Bose
But the same leaflets acted on by light from below exhibit a folding upwards, the phototropic effect being now negative.
Life Movements in Plants, Volume II, 1919|Sir Jagadis Chunder Bose
This has even led to assumption that there are phototropic particles which function like statoliths in geotropic organs.
Life Movements in Plants, Volume II, 1919|Sir Jagadis Chunder Bose

As the responsive movement is towards light, the phototropic effect must be regarded as positive.
Life Movements in Plants, Volume II, 1919|Sir Jagadis Chunder Bose
I shall now describe the phototropic effect of unilateral light in pulvinated, and in growing organs.
Life Movements in Plants, Volume II, 1919|Sir Jagadis Chunder Bose