Definition of perigynium in US English:

perigynium

noun

Botany
  • A structure surrounding the ovary or archegonium of a plant; specifically an inflated membranous sac (utricle) surrounding the ovary in sedges.

Origin

Early 19th century; earliest use found in Samuel Frederick Gray (1766–1828), naturalist and pharmacologist. From scientific Latin perigynium from peri- + ancient Greek γυνή + scientific Latin -ium.

Pronunciation

perigynium

/ˌpɛrɪˈdʒɪnɪəm/