Roi
"Roi" in Polish
RI
(Republic of Ireland)
ROI
(return on investment — see also return on investment)
ROI
(region of interest (in digital images, microscopy: in 3-dim-specimen reconstructions by consecutive sectioning))
ROI
(region of interest (military, espionage))
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.