Definition of helicity in English:


Syllabification: he·li·ci·ty
Pronunciation: /həˈlisitē


1chiefly Biochemistry Helical character, especially of DNA.
More example sentences
  • 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.
2 Physics A combination of the spin and the linear motion of a subatomic particle.
More example sentences
  • 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‘.


1950s (sense 2): from Latin helix, helic- 'spiral' + -ity.

Definition of helicity in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day rebuff
Pronunciation: rɪˈbʌf
reject (someone or something) in an abrupt manner…