Definition of pseudoscalar in English:

pseudoscalar

adjective

Physics Mathematics
  • Relating to or of the nature of a variable quantity that transforms as a scalar under rotation but changes sign under reflection; described or represented mathematically by such a quantity.

noun

Physics Mathematics
  • A pseudoscalar quantity. Also: a subatomic particle whose wave function is such a quantity, the particle having zero spin and odd parity.

Origin

1920s; earliest use found in Proceedings of the Royal Society of London. From pseudo- + scalar.

Pronunciation

pseudoscalar

/ˌs(j)uːdə(ʊ)ˈskeɪlə/