The word 不见 is formed through the straightforward semantic combination of two fundamental characters: 不 (bù), which conveys negation meaning "not", and 见 (jiàn), a verb meaning "to see" or "to perceive". Their union creates a single conceptual unit where the negation directly modifies the action, resulting in the core meaning of "to not see" or "to be invisible". This formation is a direct, compositional merging of meaning, where the whole is essentially the sum of its transparent parts.