circinate

形容词 circinate:

1. shaped like a ring
   同义词：annular, annulate, annulated, circular, ringed, ring-shaped, doughnut-shaped

cir.ci.nate

adj.（形容词）
Ring-shaped.
圈形的，环状的
Botany Rolled up in the form of a coil with the tip in the center, as an unexpanded fern frond.
【植物学】 拳卷的，旋卷的：卷成线圈样式，其尖端在中间的，如未展开的蕨叶的

来源：
Latin circin3tus [past participle of] circin3re [to make circular]
拉丁语 circin3tus [] circin3re的过去分词 [使成圆形]
from circinus [pair of compasses] * see Circinus
源自 circinus [圆规] *参见 Circinus

【引伸】
cir.cinate.ly
adv.（副词）