[si.nu.soi.dal] adj (1878): of, relating to, shaped like, or varying according to a sine curve or sine wave "~ motion" "~ alternating current" "~ grooves" -- si.nu.soi.dal.ly adv
SINUSOIDAL
Meaning of SINUSOIDAL in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012