What does Sine mean?
Sine /sine/ as a name for girls is of Irish derivation, and the meaning of the name Sine is "God is gracious". Sine is a variant form, with the prefix Si-, of Sheena (Irish): transcription of Jane (Hebrew) "God's grace". Sine is also a variation of Sinead (Irish, Hebrew).
How popular is Sine?
Sine is an unusual given name for females but a very prominent surname for both adults and children (#13005 out of 150436, Top 9%). (2000 U.S. Census)
Below is a graphed analysis of the popularity of the girl name Sine and affiliated names. Prominent related forms of Sine (not in Top 1000) are Sinead, Sina and Sheena. Other forms, like Shiona, are uncommon. Adoption of these forms of Sine was widespread during 1980-1989 (median #723) and has become less since. (Top 1000 Baby Names Statistics, 2014)
Sine is pronounced similarly to Cyn, San, Sian, Zanne and Zin. Other recommended similar baby names are Aine, Fione, Gene▼, Kine, Raine, Rene▼, Sana, Sena▼, Shaine, Shane, Shene, Shone, Siana, Siena▲, Signe▼, Signy, Sile, Sima, Sinnie, Sinny, Sinty, Stine, Sunel, Suse and Tine. These names tend to be more frequently used than Sine.