n.1.(Zool.) The median, convex lobe of the head of a trilobite. See Trilobite.
References in periodicals archive ?
In this study, the repellency of the mint Clinopodium glabellum against Demacentorvariabilis was studied using an in vitro assay.
Repellent properties of Clinopodium glabellum against the American dog tick Dermacentor variabilis.