decalage

[ dey-kuh-lahzh ]
/ ˌdeɪ kəˈlɑʒ /

noun

the difference between the angles of incidence of the upper and lower wings of a biplane: A biplane has positive decalage if the angle of incidence of the upper wing is greater than that of the lower wing and negative decalage when the lower wing has the greater angle.

QUIZZES

How Hip Is Your Lingo? Take Our Slang Quiz!
If you aren’t already skilled in slang, then this quiz can get you up to speed in no time!
Question 1 of 11
OK Boomer can be perceived as pejorative, but it is mostly considered to be _____

Origin of decalage

< French décalage ‘a shift, gap, displacement’ < décaler ‘to offset, shift’ (< dé- de- + caler ‘to fill up, wedge’ < cale ‘a wedge’) + -age -age
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020