society > occupation and work > industry > working with specific materials > working with metal > work with metal [verb (transitive)] > refine > by specific method
calcinec1386
calcinate1559
calcinize1606
cupel1644
decrepitate1646
scorify1755
cupellate18..
retort1850
liquate1864
star1886
zone-refine1962
zone level1974
zone-melt1982
1974 Jrnl. Physics D7 33 The mixed alloy was then placed in a porcelain boat and zone-levelled by passing through 10–15 zones.