in·ter·plan·e·tary
| \ ˌin-tər-ˈpla-nə-ˌter-ē
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Definition of interplanetary
: existing, carried on, or operating between planets
interplanetary dust an interplanetary flight interplanetary spacecraft
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“Interplanetary.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/interplanetary. Accessed 27 Jul. 2021.
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More Definitions for interplanetary
interplanetary
adjective
English Language Learners Definition of interplanetary
astronomy
: existing or occurring between planets
See the full definition for interplanetary in the English Language Learners Dictionary
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The first known use of interplanetary was in 1691
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