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Ra SimpleWikiWiktionaryGoogle検索CollinsCambridgeLongmanLongman英和Learners 【 145206 】 【意味】 "[名詞] ancient Egyptian sun god with the head of a hawk; a universal creator; he merged with the god Amen as Amen-Ra to become the king of the gods [例] He believed that Ra was the creator of the universe. [意味] ラー, 太陽神 ; [同義語] Re ; [上位語] Egyptian deity ; [同義語群] 09513216-n [名詞] an intensely radioactive metallic element that occurs in minute amounts in uranium ores [例] Ra is a chemical element with the atomic number 88. [例] Ra is a chemical element that is a radioactive metal. [意味] ラジウム ; [同義語] radium, atomic number 88 ; [上位語] metal, metallic element ; [同義語群] 14651921-n"
RA SimpleWikiWiktionaryGoogle検索CollinsCambridgeLongmanLongman英和Learners 【 145207 】 【意味】 "[名詞] (astronomy) the equatorial coordinate specifying the angle, measured eastward along the celestial equator, from the vernal equinox to the intersection of the hour circle that passes through an object in the sky; usually expressed in hours and minutes and seconds; used with declination to specify positions on the celestial sphere [例] one hour of right ascension equals fifteen degrees [例] The RA of the star is given in the catalog. [例] The RA of the star is known to be very accurate. [意味] 赤経, 黄経 ; [同義語] celestial longitude, right ascension ; [上位語] angular distance ; [同義語群] 08633191-n"