anneal

Definitions

• (metallurgy) To subject to great heat and then (often slow) cooling, and sometimes reheating and further cooling, for the purpose of rendering less brittle; to temper; to toughen.
• To cool glass slowly, to minimize internal stress.
• (archaic) To burn colors onto a glass or other surface.
• (genetics) To make a double-stranded nucleic acid by pairing a single strand with a complementary strand.
• (figurative) To strengthen or harden.