alertable adjective3 •Capable of receiving and responding to notifications from other threads of execution.Since your thread is in an alertable state, as soon as an APC entry appears, the system wakes your thread and empties the queue (by calling the callback routines). — 2000 •Able to respond constructively to being alerted.Those members of our society who are alertable now know that there are serious global problems of environmental deterioration and resource depletion. — 1973 •Requiring the partner of the person making a bid to alert the opponents that the bid's meaning involves a partnership understanding that is not readily understood.Bids marked in red on the convention card must be alerted. Cue-bids of an opponent's suit, however, are not alertable. — 1991