Definition of ptilinum in English:

ptilinum

noun

Entomology
  • A structure on the head of cyclorrhaphous dipteran flies which can be inflated (especially to rupture the puparium) and later atrophies, leaving a suture.

Origin

Mid 19th century. From scientific Latin ptilinum from French ptiline, apparently arbitrarily from ancient Greek πτίλον soft feather, down, plume.

Pronunciation

ptilinum

/tɪˈlʌɪnəm/