Glossary terms starting with "g"

Ghost striae

Faint striae, composed of areolae that may not penetrate the valve wall.



Convex, rounded, protuberant; exceeding a semi-circle but less than a circle.

Girdle view

The view of the frustule when the girdle is uppermost. See valve view for an alternate view of the frustule and cingulum for a definition of the girdle.



A small rounded projection of silica on the outer surface of the valve.