\ˈspek \

Definition of spec 

(Entry 1 of 3)

1 : specification usually used in plural also : a single quantity (such as a dimension or a measure of performance) describing a product especially as part of a specification

2 : speculation built the house on spec


specced or spec'd\ ˈspekt \; speccing

Definition of spec (Entry 2 of 3)

Definition of spec (Entry 3 of 3)

Examples of spec in a Sentence


parts built according to spec

Recent Examples on the Web: Noun

The specs include a 12.3MP rear-facing camera and an 8MP wide-angle front-facing camera for capturing high-quality photo and video. Alexandria Haslam, PCWorld, "Google's original Pixel and Pixel XL phones are discounted by hundreds of dollars now," 6 July 2018 Only two 750s were made, both with unique specs, so this marked a rare treat. Eric D. Lawrence, Detroit Free Press, "What's it like to drive a historic Italian roadster? We find out," 8 June 2018 The specs are similar to the Amazon Fire TV 4K dongle or the Xiaomi Mi Box. Ron Amadeo, Ars Technica, "Google’s Android TV dongle is real, but it won’t end up in stores," 9 May 2018 Up your summer style with a pair of trendy specs inspired by your favorite celebrity. Hannah Yasharoff, USA TODAY, "Summer sunglasses trends 2018: 22 celeb-approved shades," 3 July 2018 Instead of a shoe pieced together from a limited number of specs, customers receive a midsole and last molded to their unique shape and movement. Ariella Gintzler, Outside Online, "Create Your Own Custom Brooks Running Shoe," 23 May 2018 However, as a dutiful scientist, Rogiest warns against applying his ratio on spec. Nick Stockton, WIRED, "Math Says Urinals in Planes Could Make Lavatory Lines Shorter for Everyone," 22 May 2018 Many of the specs are vague, but in-game the FT-1 makes 486 hp at 7,000 rpm with 425.2 lb-ft of torque at 3,000 rpm. Austin Irwin, Car and Driver, "Keep It 1.11: Gran Turismo Sport Expands with New Update," 5 Feb. 2018 View 10 Photos Although Hyundai hasn’t yet detailed the Kona Electric’s specs or feature lineup for the United States—or set its pricing—we’re expecting it to be quite close to how the model is positioned in Europe. Bengt Halvorson, Car and Driver, "2019 Hyundai Kona Electric Boasts a Big Battery," 28 Feb. 2018

Recent Examples on the Web: Verb

The developer who sold a Los Angeles spec home to Detroit Pistons owner Tom Gores for $100 million in 2016 is listing another property for $135 million. Katherine Clarke, WSJ, "Los Angeles Mansion Shoots for a Record $135 Million," 12 June 2018 As with most ultrabooks, the more you it spec-out, the shorter the battery life becomes: Dell estimates that the base model of the XPS 13 with a Core i5 processor, 4GB of RAM, and 128GB of storage will last nearly 20 hours on a single charge. Valentina Palladino, Ars Technica, "XPS 13 2018 review: Dell’s improvements propel this laptop forward," 24 Feb. 2018 Now, there's an easier way—simply spec your Mustang GT from the factory with the $6,500 Performance Pack 2. Jonathan M. Gitlin, Ars Technica, "We went to drive the new Ford Mustang—but a tornado messed things up," 17 May 2018 In fact, the 195.9-inch long 2019 ES specs out closer to the 1990 Lexus LS 400 flagship than the first ES 250. Jeff Yip, Houston Chronicle, "Posher, sleeker 2019 Lexus ES will have Apple CarPlay, Amazon Alexa," 16 June 2018 The idea is meant to speed up the development process compared to the old model, in which a contractor builds the item to spec only after the design has been proven during testing. Joe Pappalardo, Popular Mechanics, "Why the Pentagon Doesn't Know How Much Anything Costs," 4 June 2018 Dedicated track rats may want to spec the C’s $8950 carbon-ceramic brakes and a set of grippier ultra-performance tires for $600, and hedonists may be interested in fancier paint, interior-trim upgrades, or one of AMG’s extra styling packages. Mike Sutton, Car and Driver, "2018 Mercedes-AMG GT C / GT C Roadster / GT R," 7 Mar. 2018 For details on features, pricing or to spec out your own, go to http://bit.ly/2019Ram1500 Going long Among the most significant changes in the 2019 Ram 1500 is the four-inch extension of crew cabs. Jeff Yip, Houston Chronicle, "Ram scores first strike as roomier, cushier all-new 2019 Ram 1500 begins shipping," 26 Mar. 2018 Buyers can no longer spec the slightly less powerful 333-hp version of this engine, and the rest of the A6’s powertrain carries over without any changes. Michael Simari, Car and Driver, "2018 Audi A6," 22 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'spec.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of spec


1926, in the meaning defined at sense 1


1965, in the meaning defined above

History and Etymology for spec


by alteration

Keep scrolling for more

Learn More about spec

Dictionary Entries near spec







special ability

Statistics for spec

Last Updated

5 Nov 2018

Look-up Popularity

Time Traveler for spec

The first known use of spec was in 1926

See more words from the same year

Keep scrolling for more

More Definitions for spec



English Language Learners Definition of spec

: a detailed description of work to be done or materials to be used in a project ( US )

specced or spec'd\ ˈspekt \; speccing\ ˈspe-​kiŋ \

Legal Definition of spec 

: to write specifications for

More from Merriam-Webster on spec

See words that rhyme with spec

Britannica English: Translation of spec for Arabic Speakers

Comments on spec

What made you want to look up spec? Please tell us where you read or heard it (including the quote, if possible).


playful or foolish behavior

Get Word of the Day daily email!

Test Your Vocabulary

Autumn Words of the Day 2018

  • a-top-down-image-of-road-through-an-autumn-forest
  • Which is a synonym of fugacious?
Name That Thing

Test your visual vocabulary with our 10-question challenge!


Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!