Also: stride split, straight split
A split in which one leg is extended frontward and the other leg is extended backward, both at right angles to the trunk. Ideally, the hips are square facing to the front, while both legs are turned out from the hips.
The split can also be identified with which leg is pointed forward - or foot pointed upward - a left split, or a right split.
Definition based on the Contortion Glossary by Greg Ullman and Tige Young