- to heat (glass, earthenware, metals, etc.) to remove or prevent internal stress.
- to free from internal stress by heating and gradually cooling.
- to toughen or temper.
- Biochemistry. to recombine (nucleic acid strands) at low temperature after separating by heat.
- to fuse colors onto (a vitreous or metallic surface) by heating.
- an act, instance, or product of annealing.
Origin of anneal
Examples from the Web for anneal
As the hammering hardens the metal it is necessary to anneal it each time after going over the surface.Copper Work
Augustus F. Rose
Taps once out in length seem to get worse at every heating, whether to anneal or to harden.
Flange one end of this tube a little, and anneal the flange well in the smoky flame.
The whole of the end of the tube is now cautiously reheated and then cooled slowly to anneal it.
Anneal with great care, and cool in such a position that the acid cannot reach the hot glass.
- to temper or toughen (something) by heat treatment
- to subject to or undergo some physical treatment, esp heating, that removes internal stress, crystal defects, and dislocations
- (tr) to toughen or strengthen (the will, determination, etc)
- (often foll by out) physics to disappear or cause to disappear by a rearrangement of atomsdefects anneal out at different temperatures
- an act of annealing
Word Origin and History for anneal
Old English onælan "to set on fire, kindle," from on- "on" + ælan "to burn, bake," from Proto-Germanic *ailan, "probably" [Watkins] from PIE *ai- "to burn" (see ash (n.1)); related to Old English æled "fire, firebrand," Old Norse eldr, Danish ild "fire." Related: Annealed; annealing.