Annealing may refer to: Annealing (metallurgy), a heat treatment that alters the microstructure of a material causing changes in properties such as strength and hardness Annealing (glass), heating a piece of glass to remove stress Annealing (biology), DNA or RNA pairing by hydrogen bonds to a complementary sequence, forming a double-stranded polynucleotide Simulated annealing, a technique for searching for a solution in a space otherwise too large for "ordinary" search methods to yield result… (More on Annealing)