Secchi disc

noun
Sec·​chi disc | \ ˈsekē- \

Definition of Secchi disc

: a reflective disc lowered into a body of water to permit measurement of the relative transparency of the water by recording the depth at which the disc is no longer visible

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History and Etymology for Secchi disc

after Angelo Secchi †1878 Italian astronomer

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Dictionary Entries Near Secchi disc

secateur

Secchi disc

secco

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Cite this Entry

“Secchi disc.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Secchi%20disc. Accessed 27 Jul. 2021.

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