Found 1 items, similar to letheon.
English → English (gcide) Definition: Letheon Letheon \Le"the*on\ (l[=e]"th[-e]*[o^]n), n. [NL., fr. Gr. lh`qh.] (Med.) Sulphuric ether used as an an[ae]sthetic agent. [R.] [1913 Webster]