(Y) = shorthand for thumbs up on Facebook
Y = sometimes shorthand for "You"
Y = sometimes shorthand for "Yes"
Y = female, y chromosome
Y = In mathematics: unknown quantity, person, factor, or thing.Y is the second in a set of two or three unknowns comprising x, y, and z.
Y = sometimes short for "Why", "Youthful"
Y = Atomic #39, a silvery metallic element that is common in rare-earth minerals; used in magnesium and aluminum alloys
Y = Y-hat ( ) is the symbol that represents the predicted equation for a line of best fit in linear regression. The equation takes the form where b is the slope and a is the y-intercept. It is used to differentiate between the predicted (or fitted) data and the observed data y.
Y = a coordinate axis in a plane
The "Y" = The YMCA
( Y ) = buttcheeks
Y = Yemen