1. The 20th Old/Ancient Greek letter or the 18th Modern/Classical Greek letter.
2. In mathematics used to indicate the summation of a set or series.
3. In statistics used to indicate something complicated not able to be understood by Urban
Dictionary readers.
4. The best meaning: a
sigma male. Similar to an alpha male but
better. A lone wolf - a self-reliant and assertive male.
1. Yesterday I read a book in
Greek and I saw the letter Sigma.
2. Blah blah
blah sigma blah
blah series blah blah- hey, you, why aren't you listening in class!
3. Mommy, what does sigma in statistics mean?
4. Man, look at this guy, he's such a sigma!