rhytidome

noun

rhyt·​i·​dome ˈri-tə-ˌdōm 

ˈrī-

: the bark external to the last formed periderm

Word History

Etymology

Greek rhytidōma wrinkle, from rhytidoun to wrinkle, from rhytid-, rhytis wrinkle

First Known Use

1861, in the meaning defined above