wavefunction /ˈweɪv.fʌŋ(k).ʃən/ noun1 •A mathematical function that describes the propagation of the quantum mechanical wave associated with a particle (or system of particles), related to the probability of finding the particle in a particular region of space.The interpretation of the wavefunction was one of the thorny issues facing the early pioneers of quantum theory. — 2011 formswavefunctions