anneal
/əˈniːl/ verb, noun
Forms anneals annealing annealed aneal
- verb (metallurgy) To subject to great heat and then (often slow) cooling, and sometimes reheating and further cooling, for the purpose of rendering less brittle; to temper; to toughen.
- verb To cool glass slowly, to minimize internal stress.
- verb (archaic) To burn colors onto a glass or other surface.
- verb (genetics, ambitransitive) To make a double-stranded nucleic acid by pairing a single strand with a complementary strand.
- verb (figurative, archaic or poetic) To strengthen or harden. “The experience annealed them, strengthening their resolve.”
- noun (chemistry, metallurgy) An act of annealing.
Synonyms
Etymology
From Middle English anelen, onelen, from Old English onǣlan (“to burn, ignite, set fire to, consume, heat, enlighten, incite, inflame, inspire, kindle”), from Proto-Germanic *ana (“on”) + Proto-Germanic *ailijaną (“to burn”), from Proto-Indo-European *h₂eydʰ- (“to burn”). The double-N spelling may have arisen by analogy with Latinate verbs like announce, annex, and annul.
The word is related to Old English onāl (“that which is burnt, burning; incense”), Old English āl (“fire, burning”), Icelandic eldur (“fire”), Swedish eld (“fire, flame”), Danish ild (“fire”).
Webster’s 1913
- verb To subject to great heat, and then cool slowly, as glass, cast iron, steel, or other metal, for the purpose of rendering it less brittle; to temper; to toughen.
- verb To heat, as glass, tiles, or earthenware, in order to fix the colors laid on them.
Etymology [OE. anelen to heat, burn, AS. an; an on + to burn; also OE. anelen to enamel, prob. influenced by OF. neeler, nieler, to put a black enamel on gold or silver, F. nieller, fr. LL. nigellare to blacken, fr. L. nigellus blackish, dim. of niger black. Cf. Niello, Negro.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “anneal”, CC BY-SA 4.0. Details