Meaning & Definition of word "Penumbra"
to
Penumbra
/pəˈnʌm.brə/
noun:
- 1. The partially shaded outer region of the shadow cast by an opaque object.
- Example: During the solar eclipse, the penumbra is the area where only a part of the sun is obscured.
- 2. A shadowy, marginal area or a state of ambiguity.
- Example: The penumbra of uncertainty surrounding the decision made many stakeholders anxious.
- 3. A region of a gradient between light and shadow.
- Example: The artist skillfully portrayed the penumbra of twilight in his landscape painting.
Etymology
From Latin 'paene' meaning 'nearly' and 'umbra' meaning 'shadow'.
Common Phrases and Expressions
penumbral eclipse:
An eclipse in which the Moon passes through the Earth's penumbra, resulting in only a slight darkening.
penumbral zone:
A transitional area where light gradually diminishes before becoming fully dark.
Related Words
umbra:
The fully shaded inner region of a shadow.
shadow:
A dark area or shape produced by a body coming between rays of light and a surface.
light:
The natural agent that stimulates sight and makes things visible.
Slang Meanings of penumbra
Meaning: A vague or obscure area in a situation.
Example Sentence: His explanation was in the penumbra of uncertainty about the project.
Meaning: A gray area where rules are not clearly defined.
Example Sentence: In the penumbra of policies, employees might cut corners.