Definition of pseudocone in English:

pseudocone

noun

Entomology
  • A soft gelatinous or fluid-filled ommatidium in the eyes of certain insects, especially dipteran flies, as contrasted with the crystalline ommatidium in the eyes of other insects.

adjective

Entomology
  • Designating or relating to such an eye.

Origin

Late 19th century; earliest use found in Quarterly Journal of Microscopical Science. After German pseudocon, adjective.