anneal /əˈniːl/


I. verb [with obj.]

1. heat (metal or glass) and allow it to cool slowly, in order to remove internal stresses and toughen it.

copper tubes must be annealed after bending or they will be brittle.
(as adj. annealing)
the chimneys of annealing furnaces.

‹figurative› Dr Lowenstein, annealed to hostility, looked at me coolly.

[Biochemistry] recombine (DNA) in the double-stranded form.
II. derivatives


– origin Old English onǣlan, from on + ǣlan ‘burn, bake’ from āl ‘fire, burning’. The original sense was ‘set on fire’, hence (in late Middle English) ‘subject to fire, alter by heating’.

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