quword 趣词
            Word Origins Dictionary
         
        
        
     
    - interplanetary (adj.)




 - 1690s, "existing between planets," from inter- + planetary. In reference to travel between planets, attested from 1897.
 - monetarist (adj.)




 - 1914, from monetary + -ist. Related Monetarism (1963).
 - monetary (adj.)




 - "pertaining to money," 1802, from Late Latin monetarius "pertaining to money," originally "of a mint," from Latin moneta "mint, coinage" (see money). Related: Monetarily.
 - planetarium (n.)




 - 1734, "orrery," Modern Latin, from Late Latin planeta (see planet) + Latin -arium "a place for." Sense of "device for projecting the night sky onto the interior of a dome" is attested from 1929.
 - planetary (adj.)




 - 1590s; see planet + -ary. Probably from Late Latin planetarius "pertaining to a planet or planets," but this is attested only as "an astrologer." Planetary nebula, so called for its shape, attested from 1785.