photoactivation

[ foh-toh-ak-tuh-vey-shuhn ]

/ ˌfoʊ toʊˌæk təˈveɪ ʃən /

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noun Chemistry.

the activation or control of a chemical, chemical reaction, or organism by light, as the activation of chlorophyll by sunlight during photosynthesis.

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CAN YOU ANSWER THESE COMMON GRAMMAR DEBATES?

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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 photoactivation

1920–25; photo- + activation

OTHER WORDS FROM photoactivation

pho·to·ac·tive, adjectivepho·to·ac·tiv·i·ty, noun

Words nearby photoactivation

photinia, photism, Photius, photo, photoactinic, photoactivation, photoactive, photo-ageing, photoaging, photoallergic, photoanalyst