The degree of resistence against denaturation or melting. (1) In DNA, thymine. (2) In proteins, threonine. The median melting temperature of duplex DNA. The difference between the median melting temperature of homoduplex DNA and heteroduplex DNA.
It is polymers thermal characteristic. It is the time interval for which polymer remains stable at certain temperature. Beyond that time if the polymer is exposed to longer duration for a given temperature, it degrades.