prism crack

prism crack

[′priz·əm ‚krak]
(geology)
A mud crack that develops in regular or irregular polygonal patterns on the surface of drying mud puddles and that breaks the sediment into prisms standing normal to the bedding.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The 600MW Prism reactor may be loosely based on the 19MW EBR II, but to claim that "the Prism technology is proven" because an experimental unit 1/30th of the size designed in the 1960s ran successfully is ridiculous ("Has Prism cracked the plutonium problem?" PE August).