transcription, транскрипция: [ noun ]
Date: 1966
: an isotope of cesium used especially in atomic clocks and one of whose atomic transitions is used as a scientific time standard
CESIUM 133
Meaning of CESIUM 133 in English
Merriam-Webster's Collegiate English vocabulary. Энциклопедический словарь английского языка Merriam Webster. 2003