(astronomy) A large circumpolar constellation of the northern sky, said to resemble a bear. It includes the familiar asterism the Big Dipper and the stars Mizar, Dubhe, and Alkaid.

(astronomy) A circumpolar constellation of the northern sky, said to resemble a bear. It includes the familiar asterism the Little Dipper and, as part of it, the northern pole star Polaris.

Of or pertaining to a bear or bears.

(rare, archaic) The ursine seal or sea bear, better known as the northern fur seal, Callorhinus ursinus.

(organic chemistry) A particular pentacyclic triterpene

plural of ursane

plural of ursal