Definitions for "Oft"
Optional Flame Test - Canadian Standards Associationâ€(tm)s test for flameretardance. Tubing with an OFT rating is highly flameretardant.
Canadian Standards Association's test for flame retardance. Tubing with an OFT rating is highly flame-retardant.
Operational Flying Training
Operational Flight Trainer
Keywords:  frequent, rarely, repeated, times
Often; frequently; not rarely; many times.
Frequent; often; repeated.
Keywords:  cup, coffee, met, intervals, short
many times at short intervals; "we often met over a cup of coffee"