umbra

• Существительное, обозначающее область полной тени, возникающую в результате полного перекрытия света, часто используется в астрономическом контексте.

A noun referring to a region of complete shadow that results from the total obstruction of light, often used in astronomical contexts.

1. Complete shadowC1formal

   The fully shaded inner region of a shadow cast by an opaque object, where the light source is completely blocked.

   Полная тень

   • During a total solar eclipse, the moon's umbra falls on Earth.
   • The observer stood in the umbra of the tree, completely hidden from the sun.
   • The umbra of the planet created a perfect dark circle on the moon's surface.

   Антонимыpenumbra