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pyrethrin Definition

py·reth·rin (pī ret̸hrin, -rēt̸hrin)

noun

either of two liquid esters, CHO or CHO, derived from chrysanthemums: the active ingredient of pyrethrum

Etymology: < pyrethrum + -in

pyrethrin Usage Examples

Adjective modifier

  • natural: Unfortunately, the natural pyrethrins are unstable in light; they are of limited use in agriculture due to their rapid breakdown.

Browse dictionary entries near pyrethrin

  1. pyrenoid
  2. Pyrenees
  3. pyrene
  4. pyre
  5. pyrargyrite
  6. pyran
  7. Pyramus and Thisbe
  8. pyramiding
  9. pyramid scheme
  10. pyramid
  1. pyrethrum
  2. pyretic
  3. Pyrex
  4. pyrexia
  5. pyrheliometer
  6. pyridine
  7. pyridoxal
  8. pyridoxamine
  9. pyridoxine
  10. pyriform