Definition of facula in English:

facula

nounPlural faculae ˈfakjʊləˈfækjələ

1A bright region on the surface of the sun, linked to the subsequent appearance of sunspots in the same area.
〔天文〕（太阳表面的）光斑
Example sentencesExamples
- Associated with sunspots are brighter areas called faculae.
- Although not easily discerned in telescopic views of the Sun, these features are brilliant enough that the overall effect of the combined spots and faculae is to boost irradiance levels.
- If the faculae loom above the surface, they could radiate light efficiently, thereby boosting the sun's overall brightness, especially during the solar maximum.
1. 1.1 A bright spot on the surface of a planet.
  （行星表面的）光斑

Derivatives

facular

adjective

The competing effects of bright "facular" regions and dark sunspots, both of which are more numerous at solar maximum, seem to explain this variation.
Example sentencesExamples
- During sunspot maximum, both increased facular activity and increases in the magnetic network of bright regions associated with supergranulation are required to explain the increased luminosity.

Origin

Early 18th century: from Latin, diminutive of fax, fac- 'torch'.

Rhymes

Dracula, oracular, spectacular, vernacular

Definition of facula in US English:

facula

nounˈfakyələˈfækjələ

1A bright region on the surface of the sun, linked to the subsequent appearance of sunspots in the same area.
〔天文〕（太阳表面的）光斑
Example sentencesExamples
- Associated with sunspots are brighter areas called faculae.
- If the faculae loom above the surface, they could radiate light efficiently, thereby boosting the sun's overall brightness, especially during the solar maximum.
- Although not easily discerned in telescopic views of the Sun, these features are brilliant enough that the overall effect of the combined spots and faculae is to boost irradiance levels.
1. 1.1 A bright spot on the surface of a planet.
  （行星表面的）光斑

Origin

Early 18th century: from Latin, diminutive of fax, fac- ‘torch’.

词汇	facula
释义	Definition of facula in English: facula nounPlural faculae ˈfakjʊləˈfækjələ 1A bright region on the surface of the sun, linked to the subsequent appearance of sunspots in the same area. 〔天文〕（太阳表面的）光斑 Example sentencesExamples Associated with sunspots are brighter areas called faculae. Although not easily discerned in telescopic views of the Sun, these features are brilliant enough that the overall effect of the combined spots and faculae is to boost irradiance levels. If the faculae loom above the surface, they could radiate light efficiently, thereby boosting the sun's overall brightness, especially during the solar maximum. 1.1 A bright spot on the surface of a planet. （行星表面的）光斑 Derivatives facular adjective The competing effects of bright "facular" regions and dark sunspots, both of which are more numerous at solar maximum, seem to explain this variation. Example sentencesExamples During sunspot maximum, both increased facular activity and increases in the magnetic network of bright regions associated with supergranulation are required to explain the increased luminosity. Origin Early 18th century: from Latin, diminutive of fax, fac- 'torch'. Rhymes Dracula, oracular, spectacular, vernacular Definition of facula in US English: facula nounˈfakyələˈfækjələ 1A bright region on the surface of the sun, linked to the subsequent appearance of sunspots in the same area. 〔天文〕（太阳表面的）光斑 Example sentencesExamples Associated with sunspots are brighter areas called faculae. If the faculae loom above the surface, they could radiate light efficiently, thereby boosting the sun's overall brightness, especially during the solar maximum. Although not easily discerned in telescopic views of the Sun, these features are brilliant enough that the overall effect of the combined spots and faculae is to boost irradiance levels. 1.1 A bright spot on the surface of a planet. （行星表面的）光斑 Origin Early 18th century: from Latin, diminutive of fax, fac- ‘torch’.
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