Noun
Initialism of range safety officer.
Initialism of registered sex offender.
Source: en.wiktionary.org“Additionally this was our first semester as an RSO, so it was already a challenge to get it started,” Reifenheiser said. Source: Internet
All of our RSO can be mixed with food… you can put it on toast because it’s a syringe and a liquid base, or you could do it the normal way and put it underneath your tongue. Source: Internet
For example, at its marksmanship clinics, Project Appleseed requires that a range safety officer (RSO) uses a weed trimmer line to check each rifle's bore for obstructions prior to its first use for the day. Source: Internet
Arnold 1980, p. 266. In 1980, the company RSO Records published this film's original musical score as both a double LP album and as an 8-track cartridge in the United States. Source: Internet
Some of these RSO interest areas include: academic, cultural/international, environmental, Greek life, political/social action, religious, sports, and science. Source: Internet
RSO Records founder Robert Stigwood left the label in 1981 and TK Records closed in the same year. Source: Internet