Definition of nucleant in US English:

nucleant

adjective

  • Forming a nucleus. rare.

noun

  • A particle that initiates nucleation, especially in another substance; an agent of (especially heterogeneous) nucleation.

Origin

1950s; earliest use found in Samuel Beckett (1906–1989), author. From nucleus + -ant.

Pronunciation

nucleant

/ˈnjuːklɪənt/