天てん文もん台だいTop 20000MeaningsNoun1. astronomical observatoryKanji used天heaven文written sentence台pedestalPitch accentてんもんだいComposed of天てん文もんastronomyNoun台だいstand; rest; base; pedestal; platform; table; holder; support; rack; setting (of a gem); …NounUsed in vocabulary電でん波ぱ天てん文もん台だいradio astronomy observatoryNounExamples1その天てん文もん台だいはよい位い置ちにある。That observatory stands in a good location.