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• dom
  dom

  noun

  Sometimes Dom a title of a monk in the Benedictine, Carthusian, Cistercian, and certain other monastic orders.
• Dom
  Dom

  noun

  a male given name, form of Dominic.
• DOM
  DOM

  abbreviation

  a potent, long-acting hallucinogen, C 12 H 19 NO 2 , usually taken orally in the form of a tablet: DOM is strictly controlled in several countries, including the United States, where it is illegal to manufacture, distribute, buy, or possess this psychedelic drug.
• -dom
  -dom

  a suffix forming nouns which refer to domain (kingdom ), collection of persons (officialdom ), rank or station (earldom ), or general condition (freedom ).
• dom.
  dom.

  abbreviation

  domain.
• Dom.
  Dom.

  abbreviation

  Dominica.
• d.o.m.
  d.o.m.

  abbreviation

  dirty old man.
• D.O.M.
  D.O.M.

  abbreviation

  to God, the Best, the Greatest.

dom

¹ American  

[dom, dawn] / dɒm, dɔ̃ /

noun

1. Sometimes Dom a title of a monk in the Benedictine, Carthusian, Cistercian, and certain other monastic orders.

2. Usually Dom a Portuguese title affixed to a man's given name; Sir: formerly a title of certain dignitaries.

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dom ² American  

[dom] / dɒm /

noun

1. a dominant in a BDSM sexual encounter or relationship.

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verb (used with object)

dommed, domming

1. to act as the dominant partner in a BDSM sexual encounter or relationship.

verb (used without object)

dommed, domming

1. to act as the dominant partner to (someone) in a BDSM sexual encounter or relationship.

Dom ³ American  

[dom] / dɒm /

noun

1. a male given name, form of Dominic.

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DOM ⁴ American  

abbreviation

Pharmacology.

1. a potent, long-acting hallucinogen, C 12 H 19 NO 2 , usually taken orally in the form of a tablet: DOM is strictly controlled in several countries, including the United States, where it is illegal to manufacture, distribute, buy, or possess this psychedelic drug.

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-dom ⁵ American  

1. a suffix forming nouns which refer to domain (kingdom ), collection of persons (officialdom ), rank or station (earldom ), or general condition (freedom ).

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dom. ⁶ American  

abbreviation

1. domain.

2. domestic.

3. dominant.

4. dominion.

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Dom. ⁷ American  

abbreviation

1. Dominica.

2. Dominican.

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d.o.m. ⁸ American  

abbreviation

Slang.

1. dirty old man.

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D.O.M. ⁹ American  

abbreviation

1. to God, the Best, the Greatest.

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-dom ¹ British  

suffix

1. state or condition

   freedom

   martyrdom

2. rank or office

   earldom

3. domain

   kingdom

   Christendom

4. a collection of persons

   officialdom

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DOM ² British  

abbreviation

1. Deo Optimo Maximo

2. informal Dirty Old Man

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abbreviation

1. Dominican Republic (international car registration)

dom ³ British  

/ dɒm /

noun

1. (sometimes capital) RC Church a title given to Benedictine, Carthusian, and Cistercian monks and to certain of the canons regular

2. (formerly in Portugal and Brazil) a title borne by royalty, princes of the Church, and nobles

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Dom. ⁴ British  

abbreviation

1. Dominican

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Usage

What does -dom mean? The suffix -dom denotes nouns for domains, collections of persons, rank or station, or general condition. It is often used in a variety of everyday and technical terms. The suffix -dom comes from Old English -dōm, meaning “statute, judgment, or jurisdiction.” Another descendant in modern English from this stem is doom, which today means “unavoidable ill fortune; ruin, death” but originally referred to a judgment or legal decision, especially an unfavorable one.

Etymology

Origin of dom¹

First recorded from 1710–20; shortened from Latin dominus “lord, master”

Origin of dom²

First recorded in 1985–90; shortened from dominant ( def. )

Origin of DOM⁴

First recorded in 1965–70; from chemical name 2,5-Dimethoxy-4-methylamphetamine; first synthesized in 1963 by U.S. psychopharmacologist Alexander Shulgin (1925–2014)

Origin of -dom⁵

Middle English; Old English -dōm; cognate with Old Norse -dōmr, German -tum; see doom

Origin of D.O.M.⁹

From Latin Deō Optimō Maximō

Example Sentences

MPs DOM closely resembled organic material produced by microbes rather than organic matter originating from land plants and soils.

From Science Daily • Dec. 31, 2025

Previous research has shown that MPs DOM can produce reactive oxygen species, influence the formation of disinfection byproducts, and alter how pollutants attach to particles in water.

From Science Daily • Dec. 31, 2025

DOM is in a spacious underground room, with a glowing bar done in striated honey onyx as its cynosure.

From New York Times • Mar. 1, 2022

We want somebody who can build code, analyze the DOM, understands page performance, and implement design and functionality changes that produce results.

From Slate • Jul. 2, 2015

An owl, with the letters DOM on a scroll in its beak, for Bishop Oldham, at Exeter.

From The Handbook to English Heraldry by Utting, R. B.