- Obs. to fire or glaze, as in a kiln
- to heat (glass, metals, etc.) and then cool, sometimes slowly, to prevent brittleness
- to strengthen and temper (the mind, will, etc.)
Origin of annealMiddle English anelen ; from Old English anælan, to burn ; from an-, on + ælan, to burn ; from al, æl, fire
verban·nealed, an·neal·ing, an·neals
- To subject (glass or metal) to a process of heating and slow cooling in order to toughen and reduce brittleness.
- To strengthen or harden.
Origin of annealMiddle English anelen, from Old English on&aemac;lan, to set fire to : on, on; see on + &aemac;lan, to kindle.
(third-person singular simple present anneals, present participle annealing, simple past and past participle annealed)
From Middle English anelen, onelen, from Old English anǣlan, onǣlan (“to set fire to, ignite, heat, inspire, incite, kindle, inflame, enlighten, burn, consume”), from Proto-Germanic *ana (“on”) + Proto-Germanic *ailijaną (“to burn”), from Proto-Indo-European *aidʰ- (“to burn”). Related to Old English onāl (“burning, incense, that which is burnt”), Old English āl (“fire, burning”), Icelandic eldur (“fire”), Swedish eld (“fire, flame”), Danish ild (“fire”).
anneal - Computer Definition
To take the brittleness out of metal, plastic or certain carbon composites. Performed in the preparation of new products or in their restoration, annealing is accomplished via a heat treating process.