The Chinese word **外形** is a compound noun formed by combining two meaningful characters: **外** (wài), meaning "outside" or "external," and **形** (xíng), meaning "shape," "form," or "appearance." It follows a common grammatical structure in Mandarin known as a "modifier-head" or "endocentric" compound, where the first character **外** modifies and specifies the type of the second character **形**. Thus, the term literally translates to "external shape," and by extension, it refers to the overall physical outline, contour, or external appearance of an object or person.