zero

Universal Words number, verb number 1 (especially AmE) (BrE also nought) 0: Five, four, three, two, zero...We have lift-off. 2 a temperature, pressure, etc. that is equal to zero on a scale: It was ten degrees below zero last night (= -10ｰC or -10ｰF). * The thermometer had fallen to zero. 3 the lowest possible amount or level; nothing at all: I rated my chances as zero. * zero inflation / growth / profit verb (zeroes, zeroing, zeroed, zeroed) [VN] to turn an instrument, control, etc. to zero PHRASALVERBS zero in on sb/sth 1 to fix all your attention on the person or thing mentioned: They zeroed in on the key issues. 2 to aim guns, etc. at the person or thing mentioned