Glabellum
Pronunciation : Gla*bel"lum
Part of Speech : n.;
Etymology : [NL. See Glabella.] (Zo?l.)
Definition : Defn: The median, convex lobe of the head of a trilobite. See Trilobite.
pl. Glabella.
Source : Webster's Unabridged Dictionary, 1913
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