temperature midpoint
Also found in: Encyclopedia.
tem·per·a·ture mid·point (Tm, tm),
the midpoint in the change in optic properties (absorbance, rotation) of a structured polymer (for example, DNA) with increasing temperature.
Synonym(s): melting temperature
tem·per·a·ture mid·point
(tm) (tem'pĕr-ă-chŭr mid'poynt)The midpoint in the change in optic properties (absorbance, rotation) of a structured polymer (e.g., DNA) with increasing temperature.