RO

Definitions

1. An a priori international auxiliary language created by Edward Powell Foster beginning in 1904.
   uncountable
2. Initialism of reverse osmosis.
   abbreviation, alt-of, countable, initialism, uncountable
3. Abbreviation of Rondônia: a state of Brazil.
   abbreviation, alt-of
4. Initialism of restraining order.
   abbreviation, alt-of, countable, initialism, uncountable
5. Initialism of receiving office.
   abbreviation, alt-of, countable, initialism, uncountable

Equivalents

CEFR level