follow Dictionary.com

What's the difference between i.e. and e.g.?

retrodirective

[re-troh-di-rek-tiv, -dahy-] /ˌrɛ troʊ dɪˈrɛk tɪv, -daɪ-/
adjective, Optics.
1.
(of a mirror, reflector, etc.) having three reflecting surfaces so oriented that a ray of light is reflected in a direction parallel but opposite to its original direction.
Origin
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source

Word of the Day

Difficulty index for retrodirective

Few English speakers likely know this word

Word Value for retrodirective

0
0
Scrabble Words With Friends