bandpass

The term 'bandpass' is a modern technical compound, formed in the 20th century within the field of electronics and signal processing. It logically combines two common English words: 'band', which evolved from a concept of binding into a meaning of a defined range or strip, and 'pass', with its core sense of movement through or across a point. The compound's literal meaning, "to pass a (frequency) band," perfectly captures its function. It describes a device or circuit that selectively transmits a designated band of frequencies while rejecting those outside it, illustrating how straightforward English compounding can create precise technical terminology.

Structure: band (range) + pass (allow through) - band: From Old Norse 'band' (something that binds), later extended to mean a strip or range. In this compound, it functions to denote a specific range or group (of frequencies). - pass: From Old French 'passer' (to go by, cross), from Latin 'passus' (step, pace). In this compound, it functions as a verb root meaning to allow through or transmit.