The headword is present active participle, nominative singular masculine, of the verb purakte/w.
[1] = Synagoge pi802, Lexica Segueriana355.26, Photius pi1548 Theodoridis. For the first gloss alone see Hesychius pi4386, which reads e)mpureu/wn ('setting fire to') as the gloss rather than e)mpurseu/wn. The latter is less frequently attested and so might be a corruption of the reading reported in Hesychius. For the second gloss alone see Etymologicum Gudianum 488.45. Outside lexicography the headword is attested only in Basil of Caesarea Homily on the Hexaemeron 3.7 (PG 29.69b, referring to the ether), and orthodoxy holds that that passage is the origin of these entries.