S. No.

English Noun S. Nos. en especially Indian English en serial number, identifying an item in any numbered series, such as a numbered list. en S/N SN en No. mul:№ Nº no.<qq:usually synonymous> Usage notes This form of the abbreviation often appears as a column heading in tabulated data. The en S/N and en SN forms often appear in reference to the serial numbers of manufactured products (for example, on nameplates).