Fédération Internationale de Gymnastique (FIG): The international and Olympic governing body of competitive gymnastics. The FIG is recognized by the International Olympic Committee and is responsible for the governance of the sport of gymnastics on the international level.  They draw up the rules, known as the Code of Points, which dictate how judges assess gymnasts and the manner in which all international competitions are run.. 

Flexibility: The ability to move a body joint through its full range of motion, the range of motion through which a joint can move without feeling pain. To have a wide range of motion in a joint. An example of the types of flexibility required of gymnasts is to be able to do all three splits. 

Flexion: Movement about a joint in which bones on either side of the joint are brought closer together, decreasing the angle of the joint. Any movement of a joint, which brings connected body parts closer together. Opposite of Extension. 

Flic-Flac: Also known as a Flip-Flop or Back Handspring. This tumbling element is used in a majority of back  tumbling passes on the floor exercise. It's also used a great deal on the balance beam. 

Fliffis: Any double somersault with a twist including double front with a ½ twist,  full-in, ½ in-1/2 out and full-out. 

Flip: Tumbling element that rotates about the transverse (horizontal) axis. Also called somersault, a salto or somie. 

Flip-Flop: Also known as a Flic-Flac or Back Handspring.

Floor Exercise: A gymnastics event which is competed by both men and women, where the gymnast performs tumbling and acrobatic passes on a 40 foot square spring floor. Women's floor exercise is done to music. 

Flyaway: A back salto dismount from either the unevens or high bar.  Can be done in tuck pike or layout. 

Fontaine: An uneven bar dismount named after Larissa Fontaine. She first performed the skill in the 1994 World Championships. The double somersaulting dismount is a back tuck with ½ twist into a front. The skill is rated by the FIG as a D level skill and its FIG number is 8.406. 

Forward Somersault: A front salto tumbling skill on the floor exercise or balance beam, done in the tuck, pike or layout positions. 

Fouetté: A term applied to a whipping gymnastics and ballet dance movement. The movement may be a short whipped movement of the raised foot as it passes rapidly in front of or behind the supporting foot or the sharp whipping around of the body from one direction to another. There are a great number and variety of fouettés. 

Free Hip Handstand: Same as a Clear Hip Handstand. 

Front Giant: A front circling skill done on high bar or uneven bars that begins and finishes in a handstand and circles around the bar in a fully extended position with the hands holding onto the bar with a reverse grip.

Front Handspring: A front tumbling skill that begins with a hurdle step and rotates 360 degrees from feet to hands to feet again. Correct execution includes a strong shoulder block and straight arms and legs.  Front handsprings can be stepped out or landed on two feet. 

Front Hip Circle: A mount for the uneven bars in which the body is supported by the hands and the hips rest on the bar. The body falls forward, pikes, the hands rotate around the bar and the gymnast ends up in a front support again.

Front Somersault: Same as Forward Somersault.

Front 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 legs are split at least 180 degrees and are flat on the floor (or beam), the hips are square facing to the front and both legs are turned out from the hips.  Also called Side Split or stride split. See also Turnout.

Front Walkover: A control skill floor and beam move where a gymnast lunges into a split handstand and continues to walk over and step out onto the feet.  This move requires both shoulder and back flexibility. 

Front: A Forward Somersault 

Full Twisting Double Back: A double back with a full twist on either of the saltos. 
Full: A back somersault with one full twist in the longitudinal axis, usually done in the layout position.

Full-in, Back-out: A double salto with a full twist with the full twist being performed during the first salto.   Also called a Full-in.

Full-in, Full-out: A double twisting double somersault with a full twist on the first salto and a full twist on the second salto. Also called a full-out.

Full Turn: A 360 degree turn gymnastics or dance skill required on both floor and beam.  The turn is traditionally done on one foot and the arms and legs are held and used  in a variety of optional positions.
 

Gymnastics Dictionary