A technique in which the deformation of a substance (and/or its reaction product(s)) under non-oscillatory load is measured as a function of temperature whilst the substance is subjected to a controlled temperature program.
Source:
PAC, 1985, 57, 1737. 'Nomenclature for thermal analysis - IV (Recommendations 1985)' on page 1740 (https://doi.org/10.1351/pac198557111737)