Terms sourced from: http://iupac.org/publications/pac/66/3/0577/

"Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations 1994)", Clarke, J.B.;Hastie, J.W.;Kihlborg, L.H.E.;Metselaar, R.;Thackeray, M.M., Pure and Applied Chemistry 1994, 66(3), 577