Word.ws English Dictionary

RO

RO is the initialism of reverse osmosis.

RO is the initialism of restraining order.

RO is the initialism of receiving office.

RO is the abbreviation of Rondônia.

Meaning of reverse osmosis

Noun

reverse osmosis (uncountable)

  1. a technique whereby a solution is forced through a semipermeable membrane under pressure; used to generate drinkable water from seawater, or to separate chemical compounds

Meaning of restraining order

Noun

restraining order (plural restraining orders)

  1. An order issued by a court of law or other legal authority for a specified timeframe forbidding the restrained party from contacting and being in close proximity to the protected party and other restrictions, usually banning the possession of arms.
    • Prescription drugs, they help me through the day / And that restraining order keeps me well at bay / And what's normal now, anyway?2007, Steven Wilson, "Normal", Porcupine Tree, Nil Recurring.
  2. An order by a judge or other legal authority that prevents an action by a government or institution.
    • On February 13, 1974, the U.S. District Court for the Eastern District of New York issued a temporary restraining order against the council to prevent it from enforcing a January 28, 1974, temporary rollback order for Nassau County police salaries. On February 16, 1974, the court issued another...1974, Economic Stabilization Program Quarterly Report Covering the Period January 1, 1974 Through May 1, 1974, U.S. Cost of Living Council, page 87

Proper noun capitalized: Ro

Ro (uncountable)

  1. An a priori international auxiliary language created by Edward Powell Foster beginning in 1904.

Forms of RO

pluralROs

Questions about RO

What does RO mean?
RO means an a priori international auxiliary language created by Edward Powell Foster beginning in 1904.
What is RO the initialism of?
RO is the initialism of reverse osmosis.
What part of speech is RO?
RO is a proper noun.

Words near RO in the dictionary

  1. RNVR
  2. rnwy
  3. rnwys
  4. RNZAF
  5. RNZN
  6. RO
  7. Ro-Henu
  8. ro-ro
  9. ro-ros
  10. ro.
  11. RO5

Source and license

Adapted from Wiktionary: RO (page history and authors); Ro (page history and authors); reverse osmosis (page history and authors); restraining order (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “RO.” Word.ws, https://word.ws/ro. Based on Wiktionary, CC BY-SA 4.0.