Peristalsis is the medical term meaning wave-like contractions. These are the type of contractions that move food through the digestive tract, for instance.
Contractions
Uterine contractions have the same name in medical terminology and lay language. The medical terminology combining form meaning uterine contractions is toco-.
The medical term for rapid but regular atrial or ventricular contractions is tachycardia.
The eponym for those contractions is Braxton-Hicks.
The medical term for involuntary contractions of the eyelid is blepharospasm. This condition can cause the eyelid to twitch or close intermittently and may be temporary or chronic.
tocodynamometer
Dermoid is the medical term meaning skin-like
Rigid is the medical term meaning board-like.
Labor - APEXLabor
Ventricular fibrillation is the term for rapid irregular contractions of the ventricles. Because the contractions are unsynchronized and random, the ventricles do not pump effectively. The patient may have no palpable pulse, and the condition can be fatal.
Tetany means sustained abnormal muscle contractions. Hypertonia refers to excess muscle tone.
Tachygastriait COULD also be gastrostenosis, it just depends on exactly how the question is asked and what it was referring to.Tachygastria