[ 2 syll. nep-tu-ne, ne-pt-une ] The baby boy name Neptune is pronounced as NEHP-CHuwN, NEHP-TuwN or NEHP-TYuwN in English †. Neptune is primarily used in English and French. It is of Latin origin. Older forms of the name include Neptunus (Latin) and Nethuns (Etrusk). The name is of uncertain meaning; it could be from the Indoeuropean element 'nebh' (meaning wet, water). The name was borne in Roman mythology by the god of water and the sea; the eighth planet from the sun is named after him.
The Welsh Neifion, the name Neptoon, the name Neptoone, the name Neptoun, the name Neptoune, the German and Scandinavian Neptun, the Portuguese and Spanish Neptuno, the Dutch, Finnish, and Scandinavian Neptunus, the Italian Nettuno, and the Portuguese Netuno are forms of Neptune.
Neptune is not often used as a baby boy name. It is not in the top 1000 names.
† Pronunciation for Neptune: N as in "knee (N.IY)" ; EH as in "ebb (EH.B)" ; P as in "pea (P.IY)" ; CH as in "cheese (CH.IY.Z)" ; UW as in "two (T.UW)" ; T as in "tee (T.IY)" ; Y as in "you (Y.UW)"