- fuse (v.)
- 1680s, "to melt," back formation from fusion. Figurative sense of "blending of different things" is first recorded 1776. Related: Fused; fusing.
- fuse (n.)
- also fuze, 1640s, from It. fuso "spindle" (so called because the originals were long, thin tubes filled with gunpowder), from L. fusus "spindle," of uncertain origin. Influenced by Fr. fusée "spindleful of hemp fiber," and obsolete English fusee "musket fired by a fuse." Meaning of "device that breaks an electrical circuit" first recorded 1884, so named for its shape, but erroneously attributed to fuse (v.) because it melts.