Last Updated
：2025/12/04
ultra-diffuse
Adjective
Japanese Meaning
極度に拡散している、非常に薄く広がっている状態を示す。 / （天文学）天の川銀河に比べ、視認可能な星の割合が非常に低く、輝度も極めて低い銀河を指す。
（ comparative ）
（ superlative ）
Quizzes for review
Extremely diffuse. / (astronomy) Specifically, designating a type of galaxy with a very low proportion of visible stars compared to the Milky Way, and hence a very low luminosity.
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ultra-diffuse
Astronomers were surprised to discover an ultra-diffuse galaxy at the edge of the cluster.
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Astronomers were surprised to discover an ultra-diffuse galaxy at the edge of the cluster.
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