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interplanetary (adj.)
1690s, "existing between planets," from inter- "between" + planet + -ary. In reference to travel between planets, attested from 1897. Boyle and Locke both used intermundane in the same sense; the Roman Epicureans had intermundia (neuter plural) for "spaces between the worlds" (translating Greek metakosmia).
updated on December 17, 2015
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Dictionary entries near interplanetary
interpellation
interpenetrate
interpenetration
interpersonal
interphase
interplanetary
interplay
Interpol
interpolate
interpolation
interpolator