A La Seconde Definition
älə sə-kŏnd, -gŏɴd, ălə
adverb
In ballet, to the side.
American Heritage
In ballet, to the second position, in which the legs are turned out from the pelvis and the feet are apart.
American Heritage
Origin of A La Seconde
French à la seconde (position) in the second (position) à to, at, in la the seconde feminine of second second
From American Heritage Dictionary of the English Language, 5th Edition