penumbra

noun

pen·um·bra pə-ˈnəm-brə How to pronounce penumbra (audio)

plural penumbrae pə-ˈnəm-(ˌ)brē How to pronounce penumbra (audio)

-ˌbrī

or penumbras

: a space of partial illumination (as in an eclipse) between the perfect shadow on all sides and the full light

: a shaded region surrounding the dark central portion of a sunspot

: a surrounding or adjoining region in which something exists in a lesser degree : fringe

the seventeenth century lay in the penumbra of the middle ages

Edward Eggleston

: a body of rights held to be guaranteed by implication in a civil constitution

the penumbra of the Bill of Rights

: something that covers, surrounds, or obscures : shroud

a penumbra of secrecy

a penumbra of somber dignity has descended over his reputation

James Atlas

penumbral

pə-ˈnəm-brəl How to pronounce penumbra (audio)

adjective

Did you know?

Every solar eclipse casts an umbra, the darker central area in which almost no light reaches the earth, and a penumbra, the area of partial shadow where part of the sun is still visible. Penumbra can thus be used to describe any "gray area" where things aren't all black and white. For example, the right to privacy falls under the penumbra of the U.S. Constitution; though it isn't specifically guaranteed there, the Supreme Court has held that it is implied, and thus that the government may not intrude into certain areas of a citizen's private life. Because its existence is still shadowy, however, the Court is still determining how much of an individual's life is protected by the right to privacy.

Example Sentences

the lunar eclipse began with a subtle darkening of the lunar surface as it passed within the Earth's penumbra a penumbra of despair fell over the doomed city

Recent Examples on the Web This is from the Earth’s lighter shadow, called the penumbra, that is barely visible to the naked eye.

Dean Regas, The Enquirer, 10 May 2022 The whole moon is in Earth’s penumbra, but the dimming is subtle.

Leigh Morgan, al, 15 May 2022 In eastern Wisconsin the spectacle is scheduled to begin at 8:32 p.m. Sunday when the edge of the Earth's shadow, or penumbra, starts touching the moon.

Paul A. Smith, Milwaukee Journal Sentinel, 14 May 2022 As Picasso’s palette became more relentlessly monochromatic, space itself seemed to squeeze these figures into more compressed forms, containing them with a dark penumbra of rich blue, as if the world could not allow them even a little air or light.

Washington Post, 3 Mar. 2022 There’s a whole penumbra of horrible things that happen after.

Jonathan Blitzer, The New Yorker, 22 Dec. 2021 This is made up of the time when the Moon hits the penumbra and umbra.

Joshua Hawkins, BGR, 17 Nov. 2021 The penumbra is the outer edge of the Earth's shadow, lasting over six hours, and the umbra is the deepest part of the shadow, lasting 3.5 hours.

Sherry Liang, CNN, 18 Nov. 2021 That’s when the penumbra, partial shadow, first becomes visible.

Joe Mario Pedersen, orlandosentinel.com, 18 Nov. 2021 See More

Legal Definition

penumbra

noun

pe·num·bra pi-ˈnəm-brə How to pronounce penumbra (audio)

plural penumbras

: an area within which distinction or resolution is difficult or uncertain

the public-private penumbra

: an extension of protection, reach, application, or consideration

especially : a body of rights held to be guaranteed by implication from other rights explicitly enumerated in the U.S. Constitution

the First Amendment has a penumbra where privacy is protected from governmental intrusion

Griswold v. Connecticut, 381 U.S. 479 (1965)

单词	penumbra
释义	penumbra noun pen·um·bra pə-ˈnəm-brə plural penumbrae pə-ˈnəm-(ˌ)brē -ˌbrī or penumbras 1 a : a space of partial illumination (as in an eclipse) between the perfect shadow on all sides and the full light b : a shaded region surrounding the dark central portion of a sunspot 2 : a surrounding or adjoining region in which something exists in a lesser degree : fringe the seventeenth century lay in the penumbra of the middle ages Edward Eggleston 3 : a body of rights held to be guaranteed by implication in a civil constitution the penumbra of the Bill of Rights 4 : something that covers, surrounds, or obscures : shroud a penumbra of secrecy a penumbra of somber dignity has descended over his reputation James Atlas penumbral pə-ˈnəm-brəl adjective Did you know? Every solar eclipse casts an umbra, the darker central area in which almost no light reaches the earth, and a penumbra, the area of partial shadow where part of the sun is still visible. Penumbra can thus be used to describe any "gray area" where things aren't all black and white. For example, the right to privacy falls under the penumbra of the U.S. Constitution; though it isn't specifically guaranteed there, the Supreme Court has held that it is implied, and thus that the government may not intrude into certain areas of a citizen's private life. Because its existence is still shadowy, however, the Court is still determining how much of an individual's life is protected by the right to privacy. Synonyms dusk shade shadiness shadow umbra See all Synonyms & Antonyms Example Sentences the lunar eclipse began with a subtle darkening of the lunar surface as it passed within the Earth's penumbra a penumbra of despair fell over the doomed city Recent Examples on the Web This is from the Earth’s lighter shadow, called the penumbra, that is barely visible to the naked eye. Dean Regas, The Enquirer, 10 May 2022 The whole moon is in Earth’s penumbra, but the dimming is subtle. Leigh Morgan, al, 15 May 2022 In eastern Wisconsin the spectacle is scheduled to begin at 8:32 p.m. Sunday when the edge of the Earth's shadow, or penumbra, starts touching the moon. Paul A. Smith, Milwaukee Journal Sentinel, 14 May 2022 As Picasso’s palette became more relentlessly monochromatic, space itself seemed to squeeze these figures into more compressed forms, containing them with a dark penumbra of rich blue, as if the world could not allow them even a little air or light. Washington Post, 3 Mar. 2022 There’s a whole penumbra of horrible things that happen after. Jonathan Blitzer, The New Yorker, 22 Dec. 2021 This is made up of the time when the Moon hits the penumbra and umbra. Joshua Hawkins, BGR, 17 Nov. 2021 The penumbra is the outer edge of the Earth's shadow, lasting over six hours, and the umbra is the deepest part of the shadow, lasting 3.5 hours. Sherry Liang, CNN, 18 Nov. 2021 That’s when the penumbra, partial shadow, first becomes visible. Joe Mario Pedersen, orlandosentinel.com, 18 Nov. 2021 See More Word History Etymology New Latin, from Latin paene almost + umbra shadow — more at umbrage First Known Use 1665, in the meaning defined at sense 1a Medical Definition penumbra noun pe·num·bra pə-ˈnəm-brə plural penumbrae -(ˌ)brē -ˌbrī or penumbras : a blurred area in a radiograph at the edge of an anatomical structure Legal Definition penumbra noun pe·num·bra pi-ˈnəm-brə plural penumbras 1 : an area within which distinction or resolution is difficult or uncertain the public-private penumbra 2 : an extension of protection, reach, application, or consideration especially : a body of rights held to be guaranteed by implication from other rights explicitly enumerated in the U.S. Constitution the First Amendment has a penumbra where privacy is protected from governmental intrusion Griswold v. Connecticut, 381 U.S. 479 (1965) see also Griswold v. Connecticut penumbra noun 1 as in shadow partial darkness due to the obstruction of light rays the lunar eclipse began with a subtle darkening of the lunar surface as it passed within the Earth's penumbra Synonyms & Similar Words Relevance shadow shade umbra blackness dusk gloom dimness semidarkness shadiness obscurity duskiness murkiness gloominess cloudiness somberness Antonyms & Near Antonyms illumination luminosity light brightness radiance incandescence brilliance luminousness luminance lucidity effulgence lightness radiancy lucidness See More 2 as in shroud something that covers or conceals like a piece of cloth a penumbra of despair fell over the doomed city Synonyms & Similar Words shroud veil cloak pall blanket mantle curtain wraps mask coverture covering hood robe cover shield blind cope screen cover-up facade Potemkin village veneer fig leaf camouflage façade gloss varnish concealer face disguise Trojan horse
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penumbra

noun

Did you know?

Synonyms

Example Sentences

Word History

Medical Definition

noun

Legal Definition

noun

noun