> [Matasović, Ranko](matasovic.md). "Sun and Moon in Celtic and Indo-European". *Studia Celto-Slavica* 2 (2009). [doi.org/10.54586/JXQD2619](https://doi.org/10.54586/JXQD2619) #link ## Abstract > Firstly, there were two words for “sun” in PIE, a neuter abstract noun (_*sh2wor_) and a masculine noun and theonym (_*seh2wōl_). The reconstruction of a heteroclitic noun with the alternation of _*l_ and _*n_ is both inherently improbable and unwarranted by evidence. Secondly, there are several names of sun and moon formed with the suffix _*-sn-_ in early IE dialects, and two of them are preserved in Celtic. Thirdly, in Celtic, nouns meaning ‘sun’ and ‘moon’ are generally derived from two types of roots: a) roots meaning ‘brilliance, light’; b) roots referring to physical shape and/or motion of the heavenly bodies in question.