decalage

noun

dec·a·lage

¦dekə¦läzh,

¦dāk-

plural -s

: the difference between the angles of incidence of the two wings of a biplane that is positive if the incidence of the upper wing is greater than that of the lower

Word History

Etymology

French décalage action of putting out of alignment, displacement, removal of a wedge, from décaler to put out of alignment, shift, remove a wedge from (from dé- de-—from Old French des-—+ caler to wedge, chock, from cale wedge, from German keil, from Old High German kīl) + -age