Penumbra

Penumbra (penumbra)
n.	(?)
Pe*num"bra
[NL., fr. L. paene almost + umbra shade.]

An incomplete or partial shadow.

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.

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

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

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The dictionary's 1913 edition of the 1900 International, renamed Webster's Revised Unabridged Dictionary, has in modern times been used in various free online resources, as its copyright lapsed and it became public domain.
- Wikipedia

Penumbra

Why Donate?

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Donations from Outside of the United States

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News: strengthen

The dictionary's 1913 edition of the 1900 International, renamed Webster's Revised Unabridged Dictionary, has in modern times been used in various free online resources, as its copyright lapsed and it became public domain. - Wikipedia

Penumbra

Why Donate?

Donate Using PayPal

Donations from Outside of the United States

Donations by Other Methods

News: strengthen

The dictionary's 1913 edition of the 1900 International, renamed Webster's Revised Unabridged Dictionary, has in modern times been used in various free online resources, as its copyright lapsed and it became public domain.
- Wikipedia