0%

penumbra

pe·num·bra
P p

Transcription

    • US Pronunciation
    • US IPA
    • UK Pronunciation
    • UK IPA
    • [pi-nuhm-bruh]
    • /pɪˈnʌm brə/
    • /pɪˈnʌmbrə/
    • US Pronunciation
    • US IPA
    • [pi-nuhm-bruh]
    • /pɪˈnʌm brə/

Definitions of penumbra word

  • noun plural penumbra Astronomy. the partial or imperfect shadow outside the complete shadow of an opaque body, as a planet, where the light from the source of illumination is only partly cut off. Compare umbra (def 3a). the grayish marginal portion of a sunspot. Compare umbra (def 3b). 1
  • noun plural penumbra a shadowy, indefinite, or marginal area. 1
  • noun penumbra half-shadow 1
  • noun penumbra area where sth exists to an uncertain degree 1
  • countable noun penumbra A penumbra is an area of light shadow. 0
  • noun penumbra a fringe region of half shadow resulting from the partial obstruction of light by an opaque object 0

Information block about the term

Origin of penumbra

First appearance:

before 1660
One of the 46% oldest English words
1660-70; < New Latin, equivalent to Latin paen- pen- + umbra shade

Historical Comparancy

Parts of speech for Penumbra

noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation

penumbra popularity

A pretty common term. Usually people know it’s meaning, but prefer to use a more spread out synonym. About 69% of English native speakers know the meaning and use word.
This word is included in each student's vocabulary. Most likely there is at least one movie with this word in the title.

penumbra usage trend in Literature

This diagram is provided by Google Ngram Viewer

Synonyms for penumbra

noun penumbra

  • adumbration — to produce a faint image or resemblance of; to outline or sketch.
  • gloominess — dark or dim; deeply shaded: gloomy skies.
  • darkening — Present participle of darken.
  • dimming — not bright; obscure from lack of light or emitted light: a dim room; a dim flashlight.
  • eclipse — Astronomy. the obscuration of the light of the moon by the intervention of the earth between it and the sun (lunar eclipse) or the obscuration of the light of the sun by the intervention of the moon between it and a point on the earth (solar eclipse) a similar phenomenon with respect to any other planet and either its satellite or the sun. the partial or complete interception of the light of one component of a binary star by the other.

Top questions with penumbra

  • what is a penumbra?
  • what is penumbra?
  • what does penumbra mean?
  • what is the penumbra?
  • what is an penumbra?
  • what is the definition of penumbra?
  • what does umbra and penumbra mean?
  • what is umbra and penumbra?
  • what is a penumbra in government?
  • what is the meaning of penumbra?
  • what are umbra and penumbra?
  • what is the umbra and penumbra?
  • what is an umbra and a penumbra?
  • what is an umbra and penumbra?

See also

Matching words

Was this page helpful?
Yes No
Thank you for your feedback! Tell your friends about this page
Tell us why?