The formation of the word 鉴于 is a conceptual fusion where the first character 鉴 (jiàn), meaning a mirror or to reflect upon, is combined with the second character 于 (yú), which denotes a point of location or basis. Together, they create a metaphorical image of "using something as a mirror to see by" or "taking a position based on a reflective observation", thereby arriving at its meaning of "in view of" or "considering". It is a compound where the abstract notion of visual reference and foundational basis merge into a single logical connector.