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res

1 American  
[reez, reys] / riz, reɪs /

noun

Chiefly Law.

plural

res
  1. an object or thing; matter.


RES 2 American  

abbreviation

Immunology.
  1. reticuloendothelial system.


res. 3 American  

abbreviation

  1. research.

  2. reserve.

  3. residence.

  4. resident; residents.

  5. resigned.

  6. resolution.


res. 1 British  

abbreviation

  1. residence

  2. resides

  3. resigned

  4. resolution

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

res 2 British  
/ reɪs /

noun

  1. a thing, matter, or object

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of res

First recorded in 1850–55, res is from the Latin word rēs

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Like Nokia’s Labovitz, he had become fixated on the Chinese company behind the res proxy network connected to Kimwolf.

From The Wall Street Journal • Apr. 3, 2026

The law deems them res nullius, which literally means a thing belonging to nobody - so responsibility falls to individual landowners.

From BBC • Dec. 25, 2025

Don’t miss some returning favorites, such as the barbacoa tamal de res, in which the beef is pleasantly tender, or the braised pork belly adobo, one of the heartier dishes at the festival.

From Los Angeles Times • Nov. 19, 2025

Not necessarily in chronology — since the flashbacks and -forwards of “Lost,” TV has become suffused with in media res openings and Vonnegutian unstickings in time.

From New York Times • Jan. 6, 2023

Perhaps the deliverance from res angusta domi helped him to paint better.

From Through East Anglia in a Motor Car by Vincent, J. E. (James Edmund)