Entry 1 sense Webster, 1913

Glabellum

· Gla·bel·lum · IPA /ɡləˈbɛləm/

01 n. The median, convex lobe of the head of a trilobite. See Trilobite.

pl. Glabella ((#))

1.
The median, convex lobe of the head of a trilobite. See Trilobite.(Zool.) See: Trilobite