Definition of helicity in English:

helicity

noun

  • 1Biochemistry
    Helical character, especially of DNA.

    • ‘In addition, its helicity could be further increased.’
    • ‘The reason for the relatively low helicity of long peptides is unclear to us.’
    • ‘One peptide was designed to maximize helicity and the other, having the same composition but a different sequence, was designed to minimize helical formation.’
    • ‘Mechanistically, the expansion event begins with a slight loss of helicity in the stem region.’
    • ‘This reduced its helicity and increased its average tilt, thereby presumably reducing fusion efficiency.’
  • 2Physics
    A combination of the spin and the linear motion of a subatomic particle.

    • ‘Linear equations can't easily capture magnetic field helicity, a property that prevents much of the field's energy from dissipating as heat.’
    • ‘One physicist later wrote that, had Maurice Goldhaber not existed, ‘I am not sure that the helicity of the neutrino would ever have been measured‘.’

Origin

1950s (in helicity (sense 2)): from Latin helix, helic- ‘spiral’ + -ity.

Pronunciation

helicity

/həˈlisədē/