- 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 unannealed
Small flasks or phials of unannealed glass, which fly to pieces when their surface is scratched by a hard body.Cooley's Practical Receipts, Volume II
In all these phenomena the behavior was that of unannealed glass, of which so many curious performances have been related.The Galaxy
Appearance of the black cross and coloured circles in a square and circular piece of unannealed glass in the polariscope.The Boy's Playbook of Science
John Henry Pepper
The brittleness of unannealed glass by change of temperature is sometimes very great.
The permeability of cobalt, both annealed and unannealed, was always diminished at the low temperature.
- 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 unannealed
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.