Definition of mesocotylar in US English:

mesocotylar

adjective

Botany
  • Of or belonging to the mesocotyl.

Origin

1920s; earliest use found in The Botanical Gazette. From mesocotyl + -ar.

Pronunciation

mesocotylar

/ˌmɛsə(ʊ)ˈkɒtɪlə/