deep-sky

adjective
\ ˈdēp-ˌskī How to pronounce deep-sky (audio) \

Definition of deep-sky

: relating to or existing in space outside the solar system deep-sky objects

First Known Use of deep-sky

1968, in the meaning defined above

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The first known use of deep-sky was in 1968

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Cite this Entry

“Deep-sky.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/deep-sky. Accessed 9 Jul. 2020.

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