Gender: Feminine
Origin: Finnish/Estonian
Meaning: “ray of light; radius; beam; sparkle.”
(SAD-eh) pronunciation can be heard here: http://forvo.com/word/säde/

The name comes directly from the Finnish word which can either refer to the mathimatical term radius or mean “light beam or ray of light” in Estonian it takes on the meaning of sparkle. Its designated name-day in Finland is October 18.