Dictionary

millonésimo

/miʝoˈnesimo/

adjective/miʝoˈnesimo/

millionth

“la millonésima persona” — the millionth person

noun, masculine/miʝoˈnesimo/plural: millonésimos

millonésimo is masculine in Spanish.

millionth

“tres millonésimos” — three millionths (³⁄_(1,000,000))