What is the ballet term for a 360 degrees turn on one foot?

Answer 1

There is one turn called a pirouette where you turn 360 degrees on the ball of your foot. There is also

~ Pirouettes en dehor (outside pirouette which is what a reg. pirouette is)

~ Pirouettes en dedan (inside pirouette)

~ Pencil turn

~Pique turn

~ Lame duck

~Chaines

~Attitude turn (Your leg can be front or back attitude)

~Fouette

~A la s econd (a fouette, but with your leg out in second the entire time)

~Coupe turns

~Axels

~Turning leaps

Answer 2

A pirouette.