in increment

in increment

1. (heraldry, of a moon) Waxing.
   • 1900, American Journal of Numismatics, page 22:

     ... dexter, per fess on a chief azure, the moon in increment argent; in base, gules, a bear passant proper; sinister, the national eagle displayed, with the radiant All-seeing eye above, but no tinctures are indicated.

   • 1992, Donald R. Mandich, Joseph Anthony Placek, Russian Heraldry and Nobility, Dramco:

     [...] between fesswise a crescent moon in her increment and one in her decrement argent.

• in decrement

• increscent, decrescent, crescent