(physics) The slowing of the passage of time experienced by objects in motion relative to an observer; measurable only at relativistic speeds.

(medicine) A surgical procedure in which the cervix is dilated and the lining of the uterus is scraped with a curet.

plural of time dilation

plural of intact dilation and extraction

A late-term surgical abortion procedure, involving (in order) dilation of the cervix, removal of the fetus from the uterus to the shoulders, and emptying of the fetal cranium to allow for easier passage of the head through the cervix and vagina.

(physics) Alternative form of time dilation (less common)

Alternative form of dilation and curettage

plural of time dilatation

A muscle of the eye, serving to dilate the iris.

plural of iris dilator muscle