[ with object ] ( time something out ) Computing (of a computer or a program) cancel an operation automatically because a predefined interval of time has passed without a certain event happening: connections are timed out when they're not in use [ no object ] : some networks will time out if they don't see activity going to the printer ( time out ) (of an operation) be cancelled automatically because a predefined interval of time has passed without a certain event happening. Phrases about time used to convey that something now happening or about to happen should have happened earlier: it's about time I came clean and admitted it against time with utmost speed, so as to finish by a specified time: he was working against time all the time constantly or very frequently: the airfield was in use all the time at one time in or during a known but unspecified past period: she was a nurse at one time at the same time 1 simultaneously; at once: answer the telephone promptly and try to pick up a pencil and notepad at the same time 2 nevertheless (used to introduce a fact that should be taken into account): I can't really explain it, but at the same time I'm not convinced at a time separately in the specified groups or numbers: he took the stairs two at a time at times sometimes; on occasions: she is at times cruel and ruthless before time before the due or