recess(redirected from pyriform recess)
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1. Anatomy a small cavity or depression in a bodily organ, part, or structure
2. US and Canadian a break between classes at a school
A surface groove or depression.
An indentation occurring in a surface, bounded by a straight line.
An area having the axial traces of folds concave toward the outer edge of the folded belt.
1. Any shallow depression in a surface.
2. A shallow depression in a floor; a sinkage.