See also: Appendix:Variations of "ar"
EsperantoEdit
EtymologyEdit
From Latin -arium, Russian -арь (-arʹ).
SuffixEdit
-aro
- a coherent collection of given objects, e.g. arbo tree, arbaro forest; vorto word, vortaro dictionary; ŝtupo step, ŝtuparo a staircase.