arthopama n. a simile which merely states the object of comparison (without adding the tertium comparationis or any particle of comparison, e.g. ‘he is a lion’, said in praise), Nir.
Böhtlingk and Roth Grosses Petersburger Wörterbuch
arthopama (von artha + upamā) n. Sachgleichniss, d. h. ein solches Gleichniss, welches auch ohne das tertium comparationis verständlich ist: atha luptopamānyarthopamānītyācakṣate siṃho vyāghra iti pūjāyām NIR. 3, 18.