- deflationary gap,
- deflecting force,
- deflection yoke
verb (used without object), spi·raled, spi·ral·ing or (especially British) spi·ralled, spi·ral·ling.
verb (used with object), spi·raled, spi·ral·ing or (especially British) spi·ralled, spi·ral·ling.
Origin of spiral
verb -rals, -ralling or -ralled or US -rals, -raling or -raled
Word Origin for spiral
1550s, from Middle French spiral, from Medieval Latin spiralis "winding, coiling" (mid-13c.), from Latin spira "coil," from Greek speira "coil, twist, wreath," from PIE *sper- "to turn, twist." Spiral galaxy first attested 1913.
1726 (implied in spiraled), from spiral (n.). Transferred and figurative sense by 1922. Related: Spiraling.
1650s, from spiral (adj.). U.S. football sense is from 1896.