pericycle

noun

peri·​cy·​cle ˈper-ə-ˌsī-kəl 

: a thin layer of parenchymatous or sclerenchymatous cells that surrounds the stele in most vascular plants

pericyclic

ˌper-ə-ˈsī-klik  -ˈsi- 

adjective

Word History

Etymology

French péricycle, from Greek perikyklos spherical, from peri- + kyklos circle — more at wheel

First Known Use

1890, in the meaning defined above