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chill-crystal
chill-crystal n.
Brit. 
/ˈtʃɪlˌkrɪstl/
, /ˈtʃɪlˌkrɪstl/U.S. /ˈtʃɪlˌkrɪstl/
/ˈtʃɪlˌkrɪstl/ΘΚΠ
society > occupation and work > materials > derived or manufactured material > materials produced from metalworking > [noun] > others
ostracitis1706
blue billy1838
placodine1854
hardhead1868
placodite1886
chill-crystal1940
1940 Chambers's Techn. Dict. 156/2 Chill crystals, small crystals formed by the rapid freezing of molten metal when it comes into contact with the surface of a cold metal mould.
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as lemmas