involute

(also involuted) adj 1 complex or intricate 复杂的; 纷繁的. 2 (botany 植) (esp of leaves or petals in bud and of shells) curling inwards at the edges （尤指叶片或花蕾的瓣及甲壳）边缘向内卷曲的, 内卷的, 内旋的.

inviolability, inviolable, inviolably, inviolate, invisibility, invisible, invisible ink, invisible mending, invisibly, invitation, invite, invite sb. to (sth.,a place), inviting, invitingly, invocation, invoice, invoke, involuntarily, involuntariness, involuntary, involuted, involution, involve, involved, involvement, involvement in, invulnerability, invulnerable, inward, inward (also inwards), inward(s), inwardly, inwardness, inwards, iodine, iodize, iodise, IOM, ion, Ionic, ionization, ionisation,