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photic zone

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noun Biology.
the upper layer of a body of water delineated by the depth to which enough sunlight can penetrate to permit photosynthesis.
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Origin of photic zone

First recorded in 1970–75

Words nearby photic zone

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use photic zone in a sentence

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