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Definition of Glabellum
1. n. The median, convex lobe of the head of a trilobite. See Trilobite.
Definition of Glabellum
1. Noun. (zoology) The median, convex lobe of the head of a trilobite. ¹
¹ Source: wiktionary.com
Medical Definition of Glabellum
1.
Origin: NL. See Glabella.