from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Anatomy A crossing or intersection of two tracts, as of nerves or ligaments.
- n. Genetics The point of contact between paired chromatids during meiosis, resulting in a cross-shaped configuration and representing the cytological manifestation of crossing over.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A crossing of two nerves, ligaments etc.
- n. The contact point between the two chromatids of a chromosome during meiosis.
from The Century Dictionary and Cyclopedia
- n. Same as chiasm.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an intersection or crossing of two tracts in the form of the letter X
Greek khīasma, cross-piece, from khīazein, to mark with an X, from khei, khī, chi (from the letter's shape).(American Heritage® Dictionary of the English Language, Fourth Edition)
Modern Latin, from Ancient Greek χίασμα, from χίαζειν ("to mark with the letter chi"). (Wiktionary)