In Esperanto, ordinal numbers are formed from cardinals by adding the -a suffix to them: unu → unua. This suffix is also applied to the abbreviated form, but connected with a hyphen, as it is usually done for abbreviations formed through removal of middle letters (e.g., doktoro → D-ro): 19-a jarcento.
laszlonemeth
commented
6 years ago
In Esperanto, ordinal numbers are formed from cardinals by adding the -a suffix to them: unu → unua. This suffix is also applied to the abbreviated form, but connected with a hyphen, as it is usually done for abbreviations formed through removal of middle letters (e.g., doktoro → D-ro): 19-a jarcento.