From Longman Dictionary of Contemporary Englishby the minuteby the minute (also every minute, minute by minute)INCREASE IN ACTIVITY, FEELINGS ETC used to say that something continues quickly becoming greater, stronger etc She was getting angrier by the minute. His voice was getting stronger every minute. → minute
Examples from the Corpus
by the minute• Medical technology changes almost by the minute.• I became angrier by the minute, but I could not convey to them why I was so upset.• By late Friday evening, the campsite was already half full with more campers arriving by the minute.• More were arriving by the minute, but were not coming up the track.• It was getting darker by the minute.• Extra police had been brought in, but the Bridgeport mob grew by the minute.• I could feel my attitude souring by the minute.• Its innovation and principal selling point was that it bills by the second rather than by the minute.• Now it's getting more violent by the minute. 