Involute
WordNet
adjective
(1) (of some shells) closely coiled so that the axis is obscured
(2) Especially of petals or leaves in bud; having margins rolled inward
WiktionaryText
Adjective
- difficult to understand, or complicated
- having the edges rolled inwards
- having a complex pattern of coils
Noun
- A curve that cuts all tangents of another curve at right angles; traced by a point on a string that unwinds from a curved object.