follow Dictionary.com

Is irregardless a word?

optic chiasma

or optic chiasm

noun
1.
a site at the base of the forebrain where the inner half of the fibers of the left and right optic nerves cross to the opposite side of the brain.
Origin of optic chiasma
1870-1875
1870-75
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the Web for optic chiasma
Historical Examples

Word of the Day

Difficulty index for optic chiasma

Few English speakers likely know this word

Word Value for optic

9
11
Scrabble Words With Friends

Nearby words for optic chiasma