The Collaborative International Dictionary
Lettic \Let"tic\ (l[e^]t"t[i^]k), a.
Of or pertaining to the Letts; Lettish.
Of or pertaining to a branch of the Slavic family, subdivided into Lettish, Lithuanian, and Old Prussian. -- n.
The language of the Letts; Lettish.
The language of the Lettic race, including Lettish, Lithuanian, and Old Prussian.