sum·ma cum lau·de (sŏŏm'ə kŏŏm lou'də, -dā, -dē, sŭm'ə kŭm lô'dē) adv.
& adj. With the greatest honor. Used to express the highest academic distinction: graduated summa cum laude; a summa cum laude graduate.
[Latin summā cum laude, with highest praise : summā, feminine ablative of summus, highest + cum, with + laude, ablative of laus, praise.]