submark

From sub- +‎ mark.

submark (plural submarks)

1. A mark making up part of a larger mark.
   • 2007, Andrew Sears, Julie A. Jacko, The Human-Computer Interaction Handbook:

     Figure 26.23(b) shows a mark that is itself composed of submarks. The mark is a line segment with four smaller line segments protruding from the ends.

submark (third-person singular simple present submarks, present participle submarking, simple past and past participle submarked)

1. (transitive) To mark with a lesser or subsidiary mark.