Daggett: A pommel horse skill named after Tim Daggett.  It consists of a scissor backward with ½ counterturn.  It has been rated as a C level skill by the FIG.

Dawes: An uneven bar skill named after Dominique Dawes.  It is a back giant with 1 ½ turn in the handstand.  It has been rated by the FIG as a D level skill.  Its FIG number is  4.403.

Deduction: Points that each judge deducts for each incorrect execution and/or composition. Points are taken off a gymnast's score for any errors. Most deductions are pre-determined, such as a 0.5 deduction for a fall from an apparatus or a 0.1 deduction for stepping out of bounds on the floor exercise. Small deductions are .1 and judges now often take off a half a tenth.  Medium deductions are .2 and large deductions are .3.  At the end of the routine the deductions are added up together and are deducted from 10.0 (or the starting value of the routine) in order to give the final gymnast’s score. 

Degree Of Difficulty: A rating that measures the difficulty of the specific moves in a gymnast’s routine.  It is factored into the total score after judges have scored the execution of the moves. Each skill has a Level of difficulty rated by the FIG as an A, B, C, D E or Super E level skill.  Difficulty in a routine is created by the combination of difficult skills or by performing the very difficult E or Super E skills.  See Bonus Points.

Demi-plié: Literally translated to a small bend. This is a  fundamental ballet movement that calls for the knees, to bend in perfect alignment over the toes with the feet flat on the floor and making sure that the  heels of the feett do not lift off the floor.

Développé: This is a ballet and gymnastics dance movement. A développé is done by drawing the toe of the gesture leg (which bends at the knee and hip) up the front, side, or back of the supporting leg, until it reaches knee height. It is then developed (unfolded) to its full extension, either to the front, side or back of the gymnast’s body.

Dislocate: This is a skill in gymnastics, that involves a rotating of the shoulders when performing a backwards turn or movement. Dislocates require a degree of shoulder flexibility to perform.  On bars, dislocates are often done out of a glide jam.

Dismount: The term used for the last skill in a gymnastics routine. For most events the method used to get off of the event apparatus. In high level competition, this skill should be at most one skill value below the hardest skill in the routine, e.g. if there is a E value skill in the routine, the dismount should be of at least D value.

Double Back: A tumbling skill with two consecutive backwards somersaults done in the same skill movement. Double backs can be done in any body position – tuck, pike, open, or layout.

Double, Double: A double twisting, double back somersault tumbling skill. This is perhaps the most difficult tumbling skill currently done on a regulation gymnastics floor. It is done in either the open tuck position or in layout.  It is also used as a dismount on high bar, rings, and uneven bars.

Double Full: A gymnastics tumbling skill consisting of a single layout salto with two twists.  It can also be done as a dismount from beam or bars, although it is rarely used off bars because of the difficulty of landing upright.  Also called a Double Twist. 

Double Lay/Double Layout: A double back salto performed in the layout position. 

Double Twist: A single layout somersault with two twists.  See Double Full.

Dynamic Stretching: The use of a controlled swinging movements through the range of motion of a limb, in order to warm up or increase flexibility. See Active Stretching.
 

Gymnastics Dictionary