porphyrize, v.
(ˈpɔːfɪraɪz)
[f. porphyr- + -ize. So, in sense 1, F. porphyriser (Dict. Trévoux).]
1. trans. To pound or triturate on a slab of porphyry or the like.
| 1747 tr. Astruc's Fevers 151 The iron is reduced to an impalpable powder, which must be porphyrized, and ordered as occasion requires. |
2. To cause to resemble porphyry.
| 1828 in Webster. |
Hence porphyriˈzation (so F. porphyrisation).
| 1831 J. Davies Manual Mat. Med. 32 Porphyrization or levigation is an operation by means of which very hard substances..are reduced to an impalpable powder. 1842–57 in Dunglison Med. Lex. 1895 in Syd. Soc. Lex. |