follow Dictionary.com

Is irregardless a word?

plane of incidence

noun, Optics.
1.
a plane determined by a given ray, incident on a surface, and the normal at the point where the incident ray strikes the surface.
Origin of plane of incidence
1825-1835
1825-35
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source

Word of the Day

Difficulty index for plane of incidence

Few English speakers likely know this word

Word Value for plane

7
10
Scrabble Words With Friends