forty-fifth
Speech parts
1. forty-fifth - Noun
2. forty-fifth - Adjective
3. forty-fifth - Adjective Satellite
Meaning
the ordinal number of forty-five in counting order
Source: WordNetSynonyms
Examples
BART's rapid transit system operates five routes on convert of line, with 44 stations in four counties; additionally, BART operates a convert AGT line to Oakland Airport which adds a forty-fifth station to the system.
A minim is always a sixtieth part of a fluidrachm regardless of the character of the substance, while a drop varies from a forty-fifth to a two-hundred-and-fiftieth part, according to the surface tension of the fluid."