Save Gender Masculine & Feminine Usage Astronomy Pronounced Pron. /æl.ˈdɛ.rə.mɪn/ [key·simplify] Meaning & History This is the name of the star Alpha Cephei in the constellation Cepheus. It bore the traditional name Alderamin, a contraction of the Arabic phrase الذراع اليمين al-dhirā‘ al-yamīn, meaning "the right arm".