(engineering) The greatest tensile engineering stress a material can withstand before it fractures.

A pigment which is the residuum of lapis lazuli after the ultramarine has been extracted, and which was formerly used as a middle or neutral tint for flesh, skies, and draperies.

A green pigment obtained as a first product in the manufacture of ultramarine, into which it is changed by subsequent treatment.

plural of ultramarine ash

(medicine) An ulcer on a finger or toe, due to deficient circulation and nutrition. In such cases the extremities are cold.

(astronomy) An observational branch of astronomy, which deals with the study of ultraviolet emission from celestial objects.

A gastric ulcer produced by elevated intracranial pressure.

(Ireland, UK, historical) A unionist mass protest campaign against the provisions of the 1985 Anglo-Irish Agreement which gave the government of the Republic of Ireland an advisory role in Northern Ireland's government.

Synonym of Aleppo boil

(historical) Northern Ireland's police force from 1922 to 2001.