transcription, транскрипция: [ noun ]
Date: 1867
: a periodic motion (as of a sounding violin string or swinging pendulum) that has a single frequency or amplitude or is composed of two or more such simple periodic motions
HARMONIC MOTION
Meaning of HARMONIC MOTION in English
Merriam-Webster's Collegiate English vocabulary. Энциклопедический словарь английского языка Merriam Webster. 2003