1) Shaped like a dot 
shaped like a point
• (a.) Having the form of a point.
Very small but not microscopic, having a diameter of less than 1 mm. ... Origin: L. Punctum, a point, + forma, shape ... (05 Mar 2000) ... 
(pungk´tĭ-form) like a point.
Shaped like a dot.
Punc'ti·form adjective [ Latin punctum point + -form .] Having the form of a point. 
Type: Term Pronunciation: pŭngk′ti-fōrm Definitions: 1. Very small but not microscopic, having a diameter of less than 1 mm.
shaped like or of the nature of a point or dot.