declivant

English

Etymology

Ultimately related to Latin dēclīvis.

Adjective

declivant (not comparable)

1. (entomology) Sloping.
   • 1875, Samuel H. Scudder, Entomological Notes, page 86:

     Head but slightly tumid above; front regularly arcuate and slightly declivant, the frontal costa broadening constantly in width toward the labrum, acuminate above; vertex narrow, the eyes being separated by a space less than equal to the diameter of one of the eyes, the fastigum scarcely declivant;  […]

   • 1909, Frederick Du Cane Godman, Osbert Salvin, Biologia Centrali-americana: Zoology, Botany and Archaeology, page 210:

     Fastigium of the vertex declivant or sloping.

   • 1917, University of Kansas. Department of Entomology, Studies in Kansas Insects: A Treatise Descriptive of the More Common Species, page 90:

     Head but little tumid above; front vertical above, roundly declivant below the costa, nearly equal, but broadening and fading on approaching the labrum, a little constricted above the antennæ; vertex moderately broad, the eyes […]