🇬🇧 en bg 🇧🇬

helix noun

  /ˈhiːlɪks/
  • (anatomy) The incurved rim of the external ear.
охлюв, спира́ла
  • (mathematics) A curve on the surface of a cylinder or cone such that its angle to a plane perpendicular to the axis is constant; the three-dimensional curve seen in a screw or a spiral staircase.
спира́ла
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