circinate
adjective
cir·ci·nate ˈsər-sə-ˌnāt 
: rounded, coiled
especially : rolled in the form of a flat coil with the apex as a center
circinate fern fronds unfolding
circinately adverb
Word History
Etymology
Latin circinatus, past participle of circinare to round, from circinus pair of compasses, from circus
First Known Use
1830, in the meaning defined above
Medical Definition
circinate
adjective
cir·ci·nate ˈsər-sᵊn-ˌāt
of lesions
: having a sharply circumscribed and somewhat circular margin
scaly circinate dermatophytids