1691, in the meaning defined above
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Cite this Entry
“Interplanetary.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/interplanetary. Accessed 27 Jul. 2021.
More Definitions for interplanetary
See the full definition for interplanetary in the English Language Learners Dictionary
More from Merriam-Webster on interplanetary
Nglish: Translation of interplanetary for Spanish Speakers
Britannica English: Translation of interplanetary for Arabic Speakers
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