The word **磁场** (cíchǎng), meaning "magnetic field," is a classic example of a modern Chinese compound noun formed through semantic combination, where the first character **磁** (cí) means "magnetic" and acts as a modifier, specifying the type of the second character **场** (chǎng), which means "field" or "arena." This follows the common grammatical structure of **modifier + head noun**, creating a precise technical term that directly and logically describes the physical phenomenon of a space where magnetic force is exerted.