ἀφρόνιτρον, Att.
ἀφρόλιτρον (the two distd. by Gal.l.c., cf.
Gp. 2.28 ),
τό, a form of
A). native sodium carbonate (cf.
νίτρον), distd. by
Gal. 12.212 from the finer
ἄνθος νίτρου, cf.
Herod.Med. ap.
Orib. 6.20.5 : in
Hp. and correct Greek divisim
ἀφρὸς νίτρου: hence
ἀφρόνιτρον is condemned by
Phryn. 272 .