About The Word Penumbra

Bay Area Crosswords

Learn about the word Penumbra to help solve your crossword puzzle. Discover Penumbra definitions and meaning, origins, synonyms, related terms and more at the free Crossword Dictionary.

Penumbra

Penumbra Meaning & Definition
Penumbra Definition And Meaning

What's The Definition Of Penumbra?

[n] a fringe region of partial shadow around an umbra

Synonyms | Synonyms for Penumbra:

Related Terms | Find terms related to Penumbra:

See Also | shadow

Penumbra In Webster's Dictionary

\Pe*num"bra\, n. [NL., fr. L. paene almost + umbra shade.] 1. An incomplete or partial shadow. 2. (Astron.) 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.) The part of a picture where the shade imperceptibly blends with the light.

More Crossword Puzzle Words

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Cross Word Of The Day

  • Idle wheel ‐ a pulley on a shaft that presses against a guide belt to guide…
  • Savin ‐ procumbent or…
  • Cram full ‐ packed full to capacity; "chowder chockablock with pieces of…
  • Lamb's lettuce ‐ widely cultivated as a salad crop and pot herb;…
  • Bismarck sea ‐ World War II naval battle; Allied land-based bombers destroyed…
  • Indiscriminating ‐ not…
  • Astragalus danicus ‐ perennial of southern and western Europe having dense racemes…
  • Coniferophytina ‐ cone-bearing gymnosperms dating from the Carboniferous period;…
  • Unvaried ‐ not diversified [adj]…
  • Animal group ‐ a group…