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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

Another time, a family friend prepared birria de res, the beef stew we have eaten our entire lives but which has become ubiquitous in Southern California only in the past seven years.

From Los Angeles Times • Aug. 11, 2023

They were playing salsa music and cooking caldo de res, a red-meat soup common in Venezuela.

From New York Times • Jun. 28, 2023

Sunt autem alii philosophi, qui contra fortunam negant Esse ullam, sed temeritate res regi omnis autumant.

From The Roman Poets of the Republic by Sellar, W. Y.