Balance: The stability and steadiness of a routine

Bed: A term for the springy landing surface of a trampoline net

Cast: Sideways travel during a move

Composition: The structure of a gymnastics routine

Compulsory routine: A routine comprised of eight specific skills that are required of all athletes and two skills that athletes choose themselves

Degree of difficulty: The prescribed rating for each skill according to the Code of Points. The ratings for every skill performed are added together for the complete difficulty score.  

Execution: The athlete's form, such as whether the body line is kept straight, legs are together and landings are near the center of the bed, as assessed by a panel of five judges. The complete execution score is calculated by eliminating the highest and lowest of the five judges' scores, and adding together the middle three scores. Each judge scores the athlete out of 10 points. The maximum total execution score is 30 points (10 + 10 + 10).

Out-bounce: A straight jump at 3/4 height performed as the last jump in a routine

Time of flight: The amount of time spent in the air, not in contact with the bed

Voluntary routine: A routine comprised of 10 skills of the athlete's choosing, with all being judged on difficulty and execution

Wrap: The athlete draws the arms in near the body to speed up a twist

Adolph: A forward somersault with 3 1/2 twists

Back: Backward somersault

Back pullover: A 3/4 back somersault from a back landing, usually to feet

Ball out: Any forward rotating skill that initiates from the back after making contact with the trampoline bed

Barani: A single forward somersault with a half-twist

Crash dive: Three-quarters of a forward somersault landing on the back

Cody: Any somersaulting skill that initiates from the stomach after making contact with the trampoline bed

Double back: A double backward somersault

Double full: A double-twisting single backward somersault

Flat back: A back drop to land with the whole body flat on the bed

Fliffis: Any double somersault with a twist

Front: A forward somersault

Full: A single backward somersault with one full twist

Half-in, half-out triffis: A full twisting triple back somersault

Lazy back 3/4: Three-quarters of a backward somersault landing on the stomach

Miller: A triple-twisting double backward somersault

Miller plus: A quadruple-twisting double backward somersault

Pike: A position in which the upper body comes close to the legs, which are kept straight. The elements performed in this position are more difficult than those done in tuck position.

Puck: A semi-tucked shape (piked tuck) used for multi-twisting multiple rotation somersaults

Quadriffis: Any quadruple somersault with a twist

Randolph/Randy: A single forward somersault with 2 1/2 twists

Rudolph/Rudy: A single forward somersault with 1 1/2 twists

Salto: Alternate term for a somersault, as in artistic gymnastics

Side somersault: Somersault around the dorso-ventral axis. Also called a barrel roll.

Somi: Short for somersault

Straddle Jump: Touching the toes when the legs are straight and held wide apart. The straddle jump is a move showing the straddle position alone, without rotation or twist.

Straight: A position in which the legs are in line with the body. The angle between the upper body and thighs must be greater than 135 degrees. The elements performed in this position are the most difficult.

Triffis: A half-twisting triple forward somersault

Tuck: A position where the knees and hips are bent and drawn into the chest, with the body folded at the waist. When the body is in this position it turns more easily.

Twist: Spinning around the body's "longitudinal" axis, an imaginary line that runs through the body from head to toe