زَاجٌ

[Vitriol;] a well-known kind of salt; (K, TA;) called شَبٌّ يَمَانِىٌّ; [but see شَبٌّ;] which is a medicinal substance, and one of the ingredients of ink: (Lth, TA:) [plural زَاجَاتٌ, meaning species, or sorts, of vitriol; namely, green, or sulphate of iron, which is an ingredient in ink, and is generally meant by the term زاج when unrestricted by an epithet; blue, or sulphate of copper; and white, or sulphate of zinc:] it is a Pers. word, (S,) arabicized, (S, K,) originally زاG. (TA.)