The fully shaded inner region of a shadow cast by an opaque object. / (astronomy) The area on the earth or moon experiencing the total phase of an eclipse. / (astronomy) The central region of a sunspot.

plural of umbra

plural of umbra

On a shadow in the shape of a right triangle, the length of the shadow's edge opposite to a measured angle.

On a shadow in the shape of a right triangle, the length of the shadow's edge adjacent to a measured angle.

simple past tense and past participle of umbrage

(transitive) To displease or cause offense. / (transitive) To shade.

A feeling of anger or annoyance caused by something offensive. / A feeling of doubt. / Leaves that provide shade, as the foliage of trees. / (obsolete) Shadow; shade.

To take offense. / To become angry and resentful.

(zoology) Nearly covered by a projecting process.