Search nanosecond (ns) nanosecond (ns) /nan″əsek′ənd/ [Gk, nanos, dwarf; L, secundus, second] , one billionth (10−9) of a second. Tweet Telegram VK Random Words ascorbic acid wobble partial liquid ventilation Austin Flint murmur caproic acid (CH3[CH2]4COOH) DAP spermatocele pimple uterine fibroid