LATIN DICTIONARYLexicon Latīnum
adjective

sub-tertĭus

Meaning

  1. less by a third of itself

sub-tertĭus, a, um, adj., of a number,
I. less by a third of itself (i. e. that bears to another the ratio of 3 to 4), a transl. of the Gr. ὑπότριτος: numerus, Mart. Cap. 7, § 761.

Quick answers

What does sub-tertĭus mean in Latin?
sub-tertĭus, a adjective, means “less by a third of itself”.