Not exactly the same, but "sb." and "sth." are common abbreviations in dictionaries, e.g. "to meet sb." or "to pick sth. up". To those familiar with this conven

Not exactly the same, but "sb." and "sth." are common abbreviations in dictionaries, e.g. "to meet sb." or "to pick sth. up". To those familiar with this convention, "s.o." can generally be inferred from context.