DCHP-1 Online
Ex [shortening of exhibition] 
n. an exhibition, especially the Canadian National Exhibition held each summer in Toronto.
- 1958 . . . Toronto youngsters add one more red-letter day to the calendar. It's the annual day at the "Ex"--the Canadian National Exhibition, which runs the latter part of August and into September.
- 1959 Lansdowne Park is a busy spot these days with workmen putting up . . . structures which will play a vital role during the Central Canada Exhibition. The "Ex" opens Aug. 21.
- 1962 . . . this reporter paid a flying trip to Toronto . . . to find out if the "Ex" of this year was "up to scratch."
- 1958 . . . Toronto youngsters add one more red-letter day to the calendar. It's the annual day at the "Ex"--the Canadian National Exhibition, which runs the latter part of August and into September.