单词 | involute |
释义 | involute/ˈɪnvəl(j)uːt![]() adjective 1 formal Involved or intricate: the art novel has grown increasingly involute 2 technical Curled spirally. 2.1 Zoology (Of a shell) having the whorls wound closely round the axis.Most contemporary goniatitids had an involute shell with compressed whorls....
2.2 Botany (Of a leaf or the cap of a fungus) rolled inwards at the edges.They were found to comprise at least three different traits: involute leaves, early flowering, and Apetala flowers....
noun Geometry The locus of a point considered as the end of a taut string being unwound from a given curve in the plane of that curve. Compare with evolute.Since normals to a straight line never intersect and tangents coincide with the curve, evolutes, involutes and pedal curves are not too interesting....
OriginMid 17th century: from Latin involutus, past participle of involvere (see involve). |
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