Secchi Disk Definition
sekē
noun
A circular, white or colored disk lowered into a body of water to estimate the clarity of the water by measuring the depth at which it disappears.
Webster's New World
Other Word Forms of Secchi Disk
Noun
Singular:
Secchi diskPlural:
secchi-disksOrigin of Secchi Disk
After Pietro Angelo Secchi (1818–1878), Italian astronomer hired to test such a disk
From American Heritage Dictionary of the English Language, 5th Edition
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Secchi + disk
From Wiktionary
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