† ˈsinapite Obs. rare.
Also 7 sinepites.
[f. L. sināp-is mustard + -ite.]
A concretionary stone composed of small granules resembling mustard-seed; a species of oolite.
| 1681 Grew Musæum iii. i. v. 295 The Sinepites, as it may be called. Being a Cluster of small hard Globules, like Mustard-seeds. 1811 Pinkerton Petral. I. 456 The analogy between pisolite and sinapite is also preferable, both being derived from the vegetable kingdom. Ibid. 457 Sinapite from Iceland. |