antiproton
nounmasculinetécnico/ɐ̃ti.pɾɔ.tɐ̃w̃/rare
an·ti·pro·tão
Definition
Term not attested in standard European Portuguese lexicon. Could be an ad hoc formation in particle physics contexts to designate the antiparticle of the proton.
Etymology
Do grego 'antí' (contra) + 'próton' (primeiro).