helicoid(redirected from Corkscrew surface)
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Of a gastropod shell, shaped like a flat coil or flattened spiral.
A surface generated by a curve which is rotated about a straight line and also is translated in the direction of the line at a rate that is a constant multiple of its rate of rotation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.