| post-stenotic dilation | Dilation of an artery, most commonly the pulmonary artery or the aorta, distal to an area of narrowing. (05 Mar 2000) |
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| pupillary dilation | <ophthalmology> The action of stretching or enlarging the pupil for example by atropine. (18 Nov 1997) |
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| dilation | The process of enlargment or expansion. The word dilatation means the same thing. Both come from the Latin dilatare meaning to enlarge or expand. (12 Dec 1998) |
| dilation and curettage | Dilation of the cervix and curettement of the endometrium. Acronym: D&C (05 Mar 2000) |
| dilation and evacuation | Dilation of the cervix and removal of the products of conception. Acronym: D&E (05 Mar 2000) |
| dilation thrombosis | Thrombosis due to slowed circulation consequent upon dilation of a vein. (05 Mar 2000) |
| urethral dilation | Increasing the caliber of the urethra by passage of a dilator. (05 Mar 2000) |