Preoperculum definitions

Preoperculum

In bony fish, the bone at the rear of the cheek, just in front of the gill cover
Found on http://english-fly-fishing-flies.s3-website-eu-west-1.amazonaws.com/glossar

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Preoperculum

• (n.) The anterior opercular bone in fishes.
Found on http://thinkexist.com/dictionary/meaning/preoperculum/

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Preoperculum

Pre`o·per'cu·lum noun [ New Latin ] (Anat.) The anterior opercular bone in fishes.
Found on http://www.encyclo.co.uk/webster/P/152

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