PENUMBRAS

Noun

penumbras

plural of penumbra

Source: Wiktionary


PENUMBRA

Pe*num"bra, n. Etym: [NL., fr. L. paene almost + umbra shade.]

1. An incomplete or partial shadow.

2. (Astron.)

Definition: The shadow cast, in an eclipse, where the light is partly, but not wholly, cut off by the intervening body; the space of partial illumination between the umbra, or perfect shadow, on all sides, and the full light. Sir I. Newton.

Note: The faint shade surrounding the dark central portion of a solar spot is also called the penumbra, and sometimes umbra.

3. (Paint.)

Definition: The part of a picture where the shade imperceptibly blends with the light.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

9 June 2025

HERMAPHRODITE

(noun) one having both male and female sexual characteristics and organs; at birth an unambiguous assignment of male or female cannot be made


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Coffee Trivia

The earliest credible evidence of coffee-drinking as the modern beverage appeared in modern-day Yemen. In the middle of the 15th century in Sufi shrines where coffee seeds were first roasted and brewed for drinking. The Yemenis procured the coffee beans from the Ethiopian Highlands.

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