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  • noun

Synonyms for penumbra

comparative darkness that results from the blocking of light rays

Words related to penumbra

a fringe region of partial shadow around an umbra

Related Words

References in periodicals archive ?
47 of Umbra (arc sees) Diameter of Penumbra (km) 4 259 4 213 7 057 8 058 (2) Angular diameter 1.
They appear more isolated and detached from each other around the penumbras, where they resemble numerous leaves crossing each other, and they are extended in more isolated fashion within the very core of the nucleus.
While competitive product offerings have stayed with traditional programming models, Penumbra Software has developed a tool to make pure object technology a reality with minimum effort.
We wholeheartedly endorse Java Foundation Classes," said Fereydoun Taslimi CTO at Penumbra Software, the developers of Super Mojo the first 100% Java RAD tool.
Penumbra Software develops and markets a Java Development environment called Mojo.
JavaBeans is especially important to Mojo's corporate customers," says Michael Mittel, Penumbra Software's Vice President of Marketing.
Penumbra is extremely excited about Sun's Java Enterprise Computing," said Michael Mittel, Penumbra Software's Vice President of Marketing.