Noun[edit] malapropism â(plural malapropisms) (uncountable) The blundering use of an absurdly inappropriate word or expression in place of a similar-sounding one.
Definition of positron. : a positively charged particle having the same mass and magnitude of charge as the electron and constituting the antiparticle of the electron âcalled also antielectron.
Positron emission topography (PET)âalso called PET imaging or a PET. scanâis a noninvasive, painless molecular imaging technology that. allows physicians to determine how organs and tissues inside the body. are functioning on a molecular and cellular level. PET is a powerful.