o.s.
See also: Appendix:Variations of "os"
English
Abbreviation
o.s.
- (in bibliographies) Initialism of old series.
- (chiefly grammar and lexicography) Initialism of oneself.
Anagrams
- S&O, SO, So, So., s.o., s/o, so
Czech
Abbreviation
o.s.
- Initialism of občanské sdružení: civic association
Finnish
Phrase
o.s.
- Initialism of omaa sukua (“née”).