Definition of preoptic in English:

preoptic

adjective

Anatomy
  • Situated in front of the optic chiasma; specifically of or designating the region of the brain consisting of the anterior part of the hypothalamus and third ventricle.

Origin

Late 19th century (in an earlier sense). From pre- + optic.

Pronunciation

preoptic

/ˌpriːˈɒptɪk/