-mat, suffix|mæt|[abbrev. of -matic suffix.]A terminal element in ns. (usu. proprietary names) denoting a device that works automatically, as rotissomat, or a business that contains automatic or self-service equipment, as automat, Laundromat. orig.U.S.1935[see -matic suffix].1951Amer. Speech Oct. 166 Probably the ‘Automat’, a self-serving institution supplying food, gave special impetus to the extension of the suffix -mat. A ‘Mail-O-Mat’ is available in the Reception Section of the Pentagon building at Washington.1971Amat. Photographer 13 Jan. 78/1 (Advt.), Nikkormat FTN f2 Nikkor, {pstlg}80.
-mat/mat/suffix.
ORIGIN: Abbreviation of -matic.
Forming names (freq. proprietary) of equipment that works automatically, or establishments operating such equipment, as Laundromat.