सएमिsaemi(accord. to some an instr. of सन = "from of old, always").
(according to to some an instrumental case of सन Equivalent to "from of old, always").
कोशःDictionaries
Every entry for a word in Apte, Monier-Williams, Macdonell and the Dhātupāṭha, with their abbreviations spelled out, and an analysis of its forms.