1
as in shadows
a time or place of little or no light
strange noises were coming from the wooded umbra beyond our campfire
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2
as in shadow
partial darkness due to the obstruction of light rays
during a solar eclipse observers located within the umbra experience a complete blocking of the sun by the moon
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Examples of umbra in a Sentence
Recent Examples on the Web
During a partial lunar eclipse, the moon passes through only part of the Earth's shadow, or umbra, entering into an imperfect alignment with the sun and Earth.
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John Tufts, The Courier-Journal, 17 Sep. 2024
The moon passes through a part of the Earth’s umbra without being entirely covered by the shadow.
—Mariyam Muhammad, The Enquirer, 17 Sep. 2024
In the case of a total lunar eclipse, the moon moves into the inner part of Earth’s shadow, or the umbra, which can turn the lunar surface a striking red for a few hours.
—Eric Lagatta, USA TODAY, 16 Sep. 2024
This lunar eclipse will be a partial one, with only the upper portion of the moon being plunged into the darkest part of the Earth's shadow known as the umbra, Monsue said.
—Chandelis Duster, NPR, 16 Sep. 2024
See all Example Sentences for umbra 
John Tufts, The Courier-Journal, 17 Sep. 2024
The moon passes through a part of the Earth’s umbra without being entirely covered by the shadow.
—Mariyam Muhammad, The Enquirer, 17 Sep. 2024
In the case of a total lunar eclipse, the moon moves into the inner part of Earth’s shadow, or the umbra, which can turn the lunar surface a striking red for a few hours.
—Eric Lagatta, USA TODAY, 16 Sep. 2024
This lunar eclipse will be a partial one, with only the upper portion of the moon being plunged into the darkest part of the Earth's shadow known as the umbra, Monsue said.
—Chandelis Duster, NPR, 16 Sep. 2024
See all Example Sentences for umbra
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'umbra.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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“Umbra.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/umbra. Accessed 16 Oct. 2024.
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