FOOTWORK
Tai sabaki: Footwork.
Hanmi: The basic aikido triangular stance.
Ai: The same.  Ai hanmi: Standing so that uke and nage have the same foot forward.
   
  Gyaku: Opposite.
  Gyaku hanmi: Standing so that uke and nage have opposite feet forward.
   
  Migi: Right.
   
  Hidari: Left.
   
  Tenkan: A turning movement involving sweeping the backward leg 180º and changing directions.
   
  Tenkai: A pivot 180º without moving the leg position.
   
  Tenshin: Stepping backwards at a 45º angle off the line of attack.
   
  ATTACKS
   
  Shomenuchi: A direct frontal strike using the hand like a sword.
   
  Yokomenuchi: A side strike to the head using the hand as a sword.
   
  Tsuki: A punch.
   
  Tekubi: Wrist.
  Ushiro: Rear.
  Ushiro tekubi tori: Rear wrist grab.
   
  Kata: Shoulder or a set of fixed stylized movements.
  Tori: Grab.
  Kata tori: Shoulder grab.
   
  Katate: Wrist.
  Katate tori: Wrist grab.
   
  Morotetori: Two hands grabbing one.
   
  Ryotetori: Two hands grabbing two.
   
  Eritori: Collar grab, usually from behind.
   
  Hijitori: Elbow grab.
   
  Kubishime: A choke hold or attack.
   
  Men: Head.
  Uchi: Inside way or to strike.
  Katatori men uchi: A shoulder grab and shomen uchi combined.
  Katatetori men uchi: A wrist grab and shomen uchi combined.
  TECHNIQUES   
  Waza: Technique.
   
  Ikkyo: The first immobilization, armbar.
   
  Nikkyo: The second immobilization, uke’s wrist and elbow at 90º, upward spiral twist on uke’s wrist.
   
  Sankyo: The third immobilization, elbow at 90º, upward spiral twist on uke’s wrist.
   
  Yonkyo: The fourth immobilization, the nerve technique.
   
  Gokyo: The fifth immobilization, similar to ikkyo but for defense against knife attacks.
   
  Shiho nage: Four directions throw.
   
  Kotegaeshi: A basic wrist throw in which the wrist is twisted outwards.
   
  Irimi: Entering.
  Irimi nage: Entering throw.
   
  Kokkyu: Breath.
  Kokkyu nage: Breath throw or the class of techniques which throw uke without employing joint techniques.
   
  Koshi: Hip.
  Koshinage: Hip throw.
   
  Kaiten: Rotary.
  Kaitennage: Rotary throw.
   
  Udekimenage: A throw applying pressure to the underside of uke’s elbow.
   
  Juji: Character for ten in Japanese and looks like a cross.
  Jujinage or Jujigarami: A throw in which uke’s arms are crossed against each other at the elbows.
   
  Ten: Heaven.
  Chi: Earth.
  Tenchi Nage: A technique in which one of the nage’s arms is directed up and the other one is down.
   
  Otoshi: Throw.
  Sumiotoshi: Corner throw.
  Aikiotoshi: A throw in which nage pins uke’s legs together.
   
  Ude: Arm.
   
  Osae: Pin.
   
  RELATIONSHIPS
   
  Nage: To throw or the partner executing a technique.
   
  Uke: The initial attacker and the one who receives the technique.
   
  Jodan: Upper way or position.
  Chudan: Middle way or position.
  Gedan: Lower way or position.
   
  Omote: A variation of a technique that is done generally to uke’s front.
   
  Ura: A variation of a technique generally done towards uke’s rear side.
   
  Soto: Outside.
  Uchi: Inside.
   
  POSTURES
   
  Seiza: The seated position with the legs folded under the torso.
   
  Kiza: Like seiza but up on the toes.
   
  Shizentai: Natural standing posture.
   
  Hasso gaeshi: A posture using the jo in which the jo is held vertical at shoulder level.
   
  BROAD CLASSES OF TECHNIQUE
   
  Suwari waza: Both uke and nage are in seiza or kiza.
   
  Hamni handachi: Uke is standing and nage is seated.
   
  Tachi waza: Standing techniques.
   
  Tachi or boken or bokuto: A wooden sword.
  Ken: A sword.
  Tachi tori: Techniques against attack with a boken.
   
  Jo: A wooden staff roughly reaching to the armpit.
  Jo tori: Techniques applied against attacks with a jo.
   
  Tanto: Knife.
  Tano tori: Techniques against knife attacks.
   
  Kumitachi: Partner boken work.
  Kumijo: Partner jo work.
   
  Suburi: Solo boken practices.
   
  EXERCISES
   
  Undo: Exercise.
  Sayo undo: Side lateral swing exercise.
  Ude furo undo: Arm spinning exercise.
  Tenkan undo (Tai no henko): A turning exercise involving a 180º spin or turn.
  Tekubi kosa undo: An exercise drawing the arms forward against an imaginary rear two handed grab.
  Ikkyo undo: An exercise in which the arms are raised as in shomenuchi ikkyo.
  Kogyu undo: Rowing exercise.
  Ushiro tori undo: An exercise practicing a defense against an imaginary bear hug from behind.
  Ushiro tekubi tori zenzen undo: An exercise practicing a defense against an imaginary tow handed rear grab.
  Yoko hiki: Side stretching exercise.
  Tekubi shindo: Wrist shaking exercise.
  Furitama: An exercise in which the hands are cupped and pressed against the body at the hara and pulsed rhythmically.
   
  TRAINING UNIFORM
   
  Gi: Practice uniform, usually a white karate or judo one.
   
  Obi: The belt worn with the keiko gi.
   
  TRAINING TERMS
   
  Keiko: Practice.
   
  Onegai Shimasu: Literally, “please teach me”, used between partners before practicing or by the group at the start of the class.
   
  Doomo arigatoo goziamasu: “Thank you very much”, used by the group at the end of class or by partners when through practicing.
   
  Gomen nasai: “I’m sorry”, used when one person has fallen into another or any other appropriate time.
   
  Moo ichido, or Moo ikkai: Do it once again.
   
  Ukemi: Protective falling.
  Sutemi waza: High falls.
   
  Shikko: Knee walking.
   
  Kata: A set, stylized series of movements.
   
  Atemi: A strike or blow intended to take uke’s mind, to disorient, shock or perhaps damage uke.
   
  Rei: Bowing.
   
  Reigi: Etiquette.
   
  Sempai: Senior.
   
  Kohai: Junior.
   
   BASIC CONCEPTS
   
  Kuzushi: Balance.
   
  Hara: The center of gravity which should be about two inches below the navel and corresponds to the third charka.
   
  Ki: Universal life force, or inner energy.
   
  Ki no musubi: To tie together or match ki.
   
  Zanshin: To hold a thought, in aikido to hold the final posture of a technique for a moment.
   
  Ma ai: The concept of a proper distance which retains ki connection and yet forces the opponent to commit in order attack.
   
  Reipaku: The vertical alignment of the body in the energetic column connecting heaven and earth.
   
  Yama no hibiki: Literally mountain echo, refers to sending out an energetic pulse to draw in or disorient uke.
   
  Kotodama: The science and practice of using sound vibrations to purify the body.
   
  Mitami shizume: A breathing exercise involving long inhalations and exhalations.
   
  Chinkon Gyoho: A specific practice of O’ Sensei’s and Sensei’s involving specific sounds and movements to align the body’s energies with the Universal Energies.
   
  Shiatsu: Acupressure.
   
  Zen: A Japanese form of Buddhism and meditation.
   
  Sen no sen tachi: The sword of initiative, moving at the precise moment of intention of uke and prior to uke’s actual movement.
   
  Ato no sen: Setting the second beat. It involves moving out of uke’s line of attack as uke’s energy expands and then expanding into uke as uke’s energy naturally contracts.
   
  Kiri harai: A sword cut that extends outward and then is drawn back physically but with continued ki extension forward.
  Kiri komi: A sword cut which physically extends during the cut.
   
  Kannagara: In the rhythm or flow. Existing in the stream of the Universal consciousness.
   
  Kami: Spirits or demigods in Shinto.
   
  Shinto: The native religion of Japan believing that all things have a spirit and that the people, after death can become Kami.
   
  Takemusu Aiki: The true warrior spirit of transcending the realm of competition. The spirit of the sword that gives life.
   
  Budo: The way of the warrior.
   
  Misogi: Ritual purification, the process of purification.
by http://studentorganizations.missouristate.edu/aikido/Aikido%20Terminology%20Glossary.htm