Le-thär'gie or Le-thär'gie-al, a.

a. [Fr. léthargique, Pr. litargic, Sp. & It. letargico, Lat. lethargicus, Gr. ληθαργικός.]

1. Given to lethargy; preternaturally inclined to sleep; drowsy; dull; heavy.
2. Pertaining to, resembling, or caused by, lethargy; as, lethargic sleep.