nt instr sg of opamma (noun)
Analysis. upa + amma, 'measured alongside': upa (up close to, near, alongside) + amma (measure, standard). The instrumental singular opammena means 'by means of a simile' or 'with a comparison as the measuring-rod'.
Etymology. upa + √am (to measure, fit). Amma cognate with Latin ammen 'fitting, suitable' and Greek amoibē 'exchange, fit return'. The prefix upa conveys the sense of bringing something near as a standard or yardstick against which to measure.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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