Definition of sexine in English:

sexine

noun

Botany
  • In the wall of a pollen grain or spore: the outer layer of the exine, which has a distinctively sculptured surface.

Origin

1940s. From s- + exine. Compare nexine.

Pronunciation

sexine

/ˈnɛksɪn//ˈnɛksiːn//ˈnɛksʌɪn/