hy·​dro·​space ˈhī-drō-ˌspās How to pronounce hydrospace (audio)
: the regions beneath the surface of the ocean

Word History

First Known Use

1963, in the meaning defined above

Time Traveler
The first known use of hydrospace was in 1963

Dictionary Entries Near hydrospace

Cite this Entry

“Hydrospace.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrospace. Accessed 2 Mar. 2024.

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