declivant

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English

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Etymology

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Ultimately related to Latin dēclīvis.

Adjective

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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 []