Clipping of English fraction.

frac

1. (mathematics) fractional part function

   frac(1.43) = 0.43

• frack

Clipping of hydrofracking.

frac (third-person singular simple present fracs, present participle fraccing, simple past and past participle fracced)

1. (oil industry) To use hydraulic fracturing (fraccing)
   • 2011, Arrow, “Fraccing”, in Arrow Energy‎^[2] (html), archived from the original on 22 January 2012:

     To date, Arrow has only fracced about 2.5 percent of its wells ...

frac (not comparable)

1. (oil industry) Relating to or denoting hydraulic fracturing
   • 2012 January 3, Ralph Benko, “Daniel Yergin's The Quest”, in Forbes‎^[3], archived from the original on 19 June 2021:

     More than a million wells have been fracced in the United States since the first frac job six decades ago.

   • 2012 January 26, Jonathan Fahey, “No energy industry backing for the word 'fracking'”, in Yahoo News‎^[4], archived from the original on 1 October 2014:

     The drilling industry has generally spelled the word without a "K," using terms like "frac job" or "frac fluid."

Abbreviation of frac job.

frac (plural fracs)

1. (oil industry) Frac job.
   • 1976, United States. Energy Research and Development Administration, Bartlesville Energy Technology Center, United States. Dept. of Energy. Division of Oil, Gas, and Shale Technology, United States. Division of Oil, Gas, Shale, and In Situ Technology, United States. Dept. of Energy. Division of Fossil Fuel Extraction, “NATURAL BUTTES UNIT, UINTAH COUNTY, UTAH, MASSIVE HYDRAULIC FRACTURING DEMONSTRATION”, in Contracts for cooperative and supporting research on enhanced oil and gas recovery and improved drilling methods‎^[5], volumes 7-10:

     A program summary showing the type and volume of fluid and the size and amount of sand that is planned for the eight fracs is shown in table 1.

Abbreviation of fracture.

frac (plural fracs)

1. Fracture.
2. Fracturing.

Abbreviation of fraction.

frac (plural fracs)

1. Fraction
2. Fractioning

• frac job
• frac spread

• FARC, FCRA, RCAF, carf

From English frock.

• IPA^(key): /fʁak/

• Audio; “fric-frac”:

  (file)

frac m (plural fracs)

1. white tie and tails

• → Russian: фрак (frak)
  • → Armenian: ֆրակ (frak)
  • → Georgian: ფრაკი (praḳi)

• “frac”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012

• fracche

Borrowed from French frac.

• IPA^(key): /ˈfrak/^[1]
• Rhymes: -ak
• Hyphenation: fràc

• Audio:

  (file)

frac m (invariable)

1. morning dress, tailcoat, white tie and tails

From Proto-Celtic *wrakkā, probably related to *grúac (“hair”); for similar sense development, see Scottish Gaelic gruagach (“maiden, woman”), which evolved from gruag, as unmarried women did not cover their hair.^[1][2][3]

Compare Welsh gwraig and Breton gwreg.

• IPA^(key): /ɸɾaɡ/

frac f

1. woman

• banscál, ben

• Gregory Toner, Sharon Arbuthnot, Máire Ní Mhaonaigh, Marie-Luise Theuerkauf, Dagmar Wodtko, editors (2019), “1 frac, frag”, in eDIL: Electronic Dictionary of the Irish Language

Borrowed from French frac.

frac n (plural fracuri)

1. white tie and tails

• fraque

Borrowed from French frac, from English frock.

• IPA^(key): /ˈfɾak/ [ˈfɾak]
• Rhymes: -ak
• Syllabification: frac

frac m (plural fracs or fraques)

1. tailcoat

• “frac”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025

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