Definition of polycotyledon in English:

polycotyledon

noun

Botany
rare
  • A plant whose embryo has more than two cotyledons, or more than the normal number of cotyledons. Later also: a cotyledon from such an embryo.

Origin

Early 19th century; earliest use found in Noah Webster (1758–1843), lexicographer. From poly- + cotyledon, after scientific Latin Polycotyledones.

Pronunciation

polycotyledon

/ˌpɒlɪˌkɒtɪˈliːdn/