punctum

[pŭngktəm]

n. pl. punc•ta (-tə)

The tip of a sharp anatomical process.
A minute round spot differing in color or appearance from the surrounding tissues; a point.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Examples from the Web for punctum

Historical Examples of punctum