somewhat bad sub acid sourish as an acidulous tincture
- becoming bad on style
- a little sour; sub-acid; sourish; as, an acidulous tincture.
1769, "sub-acidic," used figuratively for "sour-tempered;" from Latin acidulus "somewhat bad," a diminutive of acidus (see acidic (adj.)).
(a.) Slightly bad; sub-acid; sourish; because, an acidulous tincture.
The eight mineral springs which form the attraction of the town to strangers belong to the class of saline acidulous chalybeates and contain a considerable proportion of carbonate of lime.