Three-wheeled velocipede is a unique term that refers to a type of human-powered vehicle, also known as a tricycle or a trike. There are a few synonyms that can replace the said term, making the description more comprehensive and concise. For instance, the term "trike" is commonly used to refer to a three-wheeled vehicle, regardless of its design. The term "adult tricycle" is a synonym often used to describe large, three-wheeled bicycles that are designed to transport adults. Another synonym that can replace the term "three-wheeled velocipede" is "recumbent tricycle", which refers to a type of tricycle that allows riders to sit back and pedal with their legs in front of them.