anneal
Concise Oxford English Dictionary © 2008 Oxford University Press:
anneal /əˈniːl/
▶verb
- 1 heat (metal or glass) and allow it to cool slowly, in order to remove internal stresses.
- 2 Biochemistry recombine (DNA) in the double-stranded form.
– derivatives
annealer noun.
annealer noun.
– origin OE onǣlan ‘set on fire’, from on + ǣlan ‘burn, bake’ from āl ‘fire, burning’.
'anneal' also found in these Oxford entries:

