Ballet
(Fr., derives from the Italian balletto, a diminutive of ballo, dance) A ballet is (a) the theatrical dance of occidental culture, presented in artistically stylised form; (b) the work thus presented and (c) a company performing those works.

Ballon
(Fr.) is the ability of a dancer to arouse the impression as if he would stand still in the air one instant long, during a jump. The force of gravity seems to be temporarily reversed.

Corps de ballet
(Fr., body of the ballet) are members of the ballet ensemble which - in contrast to the soloists - appear as a big group. The members work for the biggest homogeneity in their movements. But it also happens that single figures appear if the choreographer intends to do so. There's nearly no classical ballet without a corps de ballet.

Elévation
Elévation designates the capacity of a dancer to attain height in springing steps.

Elève
Elève designates the apprentice dancers.

Jeté or Pas jeté
(Fr. jeter, throw) Designates a jump from one leg to the other, in which the working leg seems to be thrown forwards, sideways, or backwards. There is a wide variety of Jetés, and they may be executed in all directions.

Positions of the Arms
In classical dance the arms play an important role. They are one of the most important ways for a dancer to express himself. They complete the particular form of the different poses. Besides this they help the dancer to execute difficult movements such as turns or jumps. All movements of the arms can be leaded back to the three main positions:
In the "first position" the arms are held at the level of the pelvic floor in front of the body. Elbows and wrists are well-rounded so that the hands almost touch each other. The plams (of the hands) are directed towards the body.
In the "second position" the arms are opened to the side and were hold a little bit under the line of the shoulders in the same height. Elbows and wrists are well-rounded a little bit and the plams are directed foreward.
In the "third position" the arms are over the head like an oval and they are a just a little in front of the body axis. The hands are almost touching, the palms are directed downwards. The distance between both hands is - such as in the "first position" - minimal. In every position the arms must be carried by the elbows an fingers.

Positions of the Legs
There are five main positions of the legs in classical dance:
In the "first position" the feet are in on line, the heels touch each other. The feet are - like in the other positions too - turned outwards.
In the "second position" the feet are also in one line but the heels are in a distance of one foot.
In the "third position" one foot is in front of the other. The heel of the first foot touches the middle of the back foot.
In the "fourth position" the feet are parallel. The point of the one feet is in front of the heel of the other one. But there`s also a distance of one foot between them.
In the "fifth position" the feet touch each other in their whole lenght, the one point in front of the other heel.

Saut
(Fr. leap) Designates a jump off both feet, and landing in the same position.

Tutu
Tutu derived from the French child's word for "bottom" and refers to the ballet skirt, made from several layers of tarlatan, silk, or nylon. The tutu has become the standard female ballet wear sincfe Taglioni's appearence in La Sylphide in 1832. In its romantic form it reaches halfway between the knee and the ankle, whereas the classic form is much shorter, reaching at most to the knee. The horizontal tutu at hip-length is a later variant. The tutu is made of a pair of tarlatan knickers trimmed with four or five row of superimposed arlatan frills, each deeper than the previous one, and surmounted by tw wider frills, the topmost being suitably ornamented with sequins or embroidery and usually strengthend by a wire hoop. The tutu proper is jointed to a skin-tight basque surmounted by a low-cut bodice. As for the Staatsballett Berlin, every single tutu for SCHWANENSEE (Swan Lake) is made of 25 m of tarlatan.
About the dictionary
What exactly means "Corps de ballet"? What designates the specialists with "Jeté" or "balloon"? And which leg positions exists?
In the world of the ballet one meets a large number of foreign language terms-an own special ballet language. Essentially it is because of the fact that the ballet has its origins in Italy and get academic in France.
The samll ballet dictionary of the Staatsballett Berlin can´t inform comprehensivly but wants to spark interests and wants to eliminate the largest misunderstandings. This will complete bit by bit. The following specialized books, which are recommended for reading and thorough looking up , are the basis:
Koegler, Horst, "The Concise Dioctionary of Ballet", Oxford 1987.
Wilson, G.B.L., "A Dictionary of Ballet", London 1961.
Horst Koegler und Helmut Günther, »Reclams Ballettlexikon«, Stuttgart 1984.
Vera Kostrowitzkaja, »Schule des Klassischen Tanzes«, Berlin 2003.
Nikolai I. Tarassow, »Klassischer Tanz – Die Schule des Tänzers«, Wilhelmshaven 1988.
Agrippina Waganowa, »Die Grundlagen des Klassischen Tanzes«, Berlin 1954.
(These books are available in several editions).