| sessile | Attached by a base rather than a stalk, a sessile lesion adheres closely to the surface (mucosa). (27 Sep 1997) |
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| sessile hydatid | A vesicular nonpedunculated structure attached to the cephalic pole of the testis; a vestige of the cephalic end of the paramesonephric (mullerian) duct. Synonym: appendix testis, appendix of the testis, nonpedunculated hydatid, ovarium masculinum, sessile hydatid. (05 Mar 2000) |
| sessile polyp | Any form of polyp that has a relatively broad base. (05 Mar 2000) |
| sessile-eyed | <zoology> Having eyes which are not elevated on a stalk; opposed to stalk-eyed. Sessile-eyed Crustacea, the Arthrostraca. Source: Websters Dictionary (01 Mar 1998) |