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demersal

adjective
de·​mer·​sal | \ di-ˈmər-səl \

Definition of demersal

: living near, deposited on, or sinking to the bottom of the sea demersal fish eggs

First Known Use of demersal

1889, in the meaning defined above

History and Etymology for demersal

Latin demersus (past participle of demergere to sink, from de- + mergere to dip, sink) + English -al entry 1 — more at merge

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The first known use of demersal was in 1889

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