Meaning of DILATATION in English


ˌdiləˈtāshən, ˌdīl- noun

( -s )

Etymology: Middle English dilatacioun, from Middle French dilatation enlargement, from Late Latin dilatation-, dilatatio, from Latin dilatatus (past participle of dilatare to dilate) + -ion-, -io, -ion

1. : amplification in writing or speech especially by the addition of discussion, illustration, or detail


a. : the condition of being stretched beyond normal dimensions especially as a result of overwork or disease

dilatation of the heart

or of abnormal relaxation

dilatation of the stomach

b. : dilation 2

3. : the act of expanding or the state of being expanded : enlarging or spreading

4. : a dilated part or formation


a. : a change in volume of a rock body under confining pressure

an increase in volume is positive dilatation and a decrease is negative dilatation

b. : the strain produced by such pressure change

• dil·a·ta·tion·al | ̷ ̷ ̷ ̷| ̷ ̷shən ə l, -shnəl adjective

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.