Erin Jacobs
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Penumbra is a global healthcare company that is focused on innovating novel technologies to help as many people as possible.
The meaning of PENUMBRA is a space of partial illumination (as in an eclipse) between the perfect shadow on all sides and the full light. How to use penumbra in a sentence. Did you know?
PENUMBRA definition: 1. a part of a shadow in which only some of the light is blocked, used especially about a shadow…. Learn more.
The penumbra (from the Latin paene "almost, nearly" and umbra "shadow") is the region in which only a portion of the light source is obscured by the occluding body. An observer in the penumbra experiences a partial eclipse.
A partial shadow between regions of full shadow (the umbra) and full illumination, especially as cast by Earth, the Moon, or another body during an eclipse. During a partial lunar eclipse, a portion of the Moon's disk remains within the penumbra of Earth's shadow while the rest is darkened by the umbra.
noun Word forms: plural -brae (-briː ) or -bras. 1. a fringe region of half shadow resulting from the partial obstruction of light by an opaque object. 2. astronomy. the lighter and outer region of a sunspot. 3. painting. the point or area in which light and shade blend. Compare umbra. Collins English Dictionary.
Definition of penumbra noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
relating to or being a shadowy, indefinite, or marginal area: The apple trees provide penumbral lighting that is perfect for studying, thinking, or even a nap. While the beneficiaries of corruption fête themselves with cocktail nights and caviar dreams, its victims wander a penumbral existence.
In a lunar eclipse, the edge of the earth's shadow — the part that isn't fully dark — is its penumbra. Sun spots also have a penumbra, the outer edge that's not quite as dark as the center. The word comes from the Latin root umbra, which means "shadow." The pen part means "almost," so a penumbra is "almost shadow."
The penumbra is a half-shadow that occurs when a light source is only partly covered by an object—for example, when the Moon obscures part of the Sun's disk. The other 2 areas are: Umbra – the shadow's dark center portion.
