[krawst, krost]
adjective Mathematics.
(of partial derivatives) mixed, especially of order two.

cross + -ed2

well-crossed, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Word Origin & History

O.E. cros, from O.Ir. cros, probably via Scandinavian, from L. crux (gen. crucis) "stake, cross," originally a tall, round pole; possibly of Phoenician origin. Replaced O.E. rood.

"ill-tempered," 1630s, probably from 16c. sense of "contrary, athwart," especially with reference to winds and sailing ships, from cross (n.).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
cross   (krôs)  Pronunciation Key 
Noun   A plant or animal produced by crossbreeding; a hybrid.

Verb   To crossbreed or cross-fertilize plants or animals.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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