transcription, транскрипция: [ ˈtrō-ˌkȯid, ˈträ-ˌkȯid ]
noun
Etymology: Greek trochoeidēs like a wheel, from trochos wheel
Date: circa 1704
: the curve generated by a point on the radius of a circle or the radius extended as the circle rolls on a fixed straight line
• tro·choi·dal trō-ˈkȯi-d ə l, trä- adjective