Umbra vs. Antumbra — What's the Difference?

A dark area, especially the blackest part of a shadow from which all light is cut off.

(rare) The region from which an occulting body appears entirely contained within the disc of the light source.

The completely dark central portion of the shadow cast by the earth, moon, or other body during an eclipse.

The darkest region of a sunspot.

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.

A shadow.

(archaic) An uninvited guest brought along by one who was invited.

One of the family Umbridae of mudminnows.

One of genus Umbrina of drums (family Sciaenidae).

The conical shadow projected from a planet or satellite, on the side opposite to the sun, within which a spectator could see no portion of the sun's disk; - used in contradistinction from penumbra. See Penumbra.

Any one of several species of sciænoid food fishes of the genus Umbrina, especially the Mediterranean species (Umbrina cirrhosa), which is highly esteemed as a market fish; - called also ombre, and umbrine.

A region of complete shadow resulting from total obstruction of light