Meaning & Definition of word "Umbra"

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    Umbra

    /ˈʌm.brə/

    noun:

    • 1. The fully shaded inner region of a shadow cast by an opaque object.
      • Example: During the solar eclipse, the moon cast its umbra upon the Earth, plunging a narrow path into darkness.
    • 2. A shadow or a shaded area.
      • Example: The cat found a comfortable spot in the umbra of the tree, away from the harsh sunlight.
    • 3. In astronomy, the darkest part of a shadow, such as that cast by Earth or the moon during an eclipse.
      • Example: Astronomers calculated that the umbra would pass over several countries during the total solar eclipse.

    Etymology

    From Latin 'umbra' meaning 'shadow' or 'shade'.

    Common Phrases and Expressions

    umbra and penumbra:

    Refers to the different parts of a shadow, with umbra being the complete shadow and penumbra being the partial shading.

    Related Words

    penumbra:

    The partially shaded outer region of a shadow.

    shade:

    Comparison to a shadow cast by a translucent object.

    Slang Meanings of umbra

    Meaning: A term used in gaming to refer to being stealthy or hidden.

    Example Sentence: He moved in the umbra to avoid being spotted by enemies.