The word "is" constitutes the third-person singular form of "to be", copula of the English language.

Abbreviations

As a two-letter abbreviation, "IS", "Is", or "is" may refer to:

• Image stabilization, a family of techniques to reduce blur caused by lens shakes
• Immune system, organic mechanisms that protect against disease
• Independence Square, any of several public squares around the world
• Independent Soldiers, a Canadian gang
• Information science, the study of data collection, manipulation, and dissemination
• Information system, an organization of data-processing persons, records, and activities
• Insertion sequence, a short DNA transposable element
• Intelligent Sport, the Lexus IS compact-sized sedan made by Toyota
• Intelligent Systems, a first-party videogame developer and internal team of Nintendo
• IntelliStar, a computer system used to display local forecasts on The Weather Channel
• Intermediate school, education between primary and secondary
• Internal security, the work of keeping domestic peace by a national force
• International Sign, considered a pidgin sign language
• International Socialists, any of several Trotskyist political organizations
• Internet slang, slang terms used on the Internet and in text and instant messages
• Interservice, between or among different branches of one nation's armed forces
• Intersexual, an organism with sex characteristics neither exclusively male nor female
  • IS, a manga about intersexuals by Chiyo Rokuhana
• Interstate, between states, in any of several meanings
• Intrinsic safety, a protection technique for electronic equipment in explosive atmospheres
• Investment/Saving equilibrium, a curve in the Keynesian IS/LM economic model
• Iosif Stalin or Joseph Stalin, General Secretary of the Soviet Union, and namesakes:
  • IS tank, a Soviet heavy tank in World War II
  • Locomotive IS, a Soviet passenger steam locomotive
• Isaiah, a prophet of the Bible, and namesake:
  • The Book of Isaiah, a book of the Bible
• Island, or isle, an isolated piece of land surrounded by water
• Ísland or Iceland (ISO 3166-1 alpha-2), a North Atlantic nation
  • ".is", Iceland's top-level Internet domain
• Island Airlines (IATA reservation code), an American aviation firm merged into Air BC
• Íslenska or Icelandic (ISO 639-1 alpha-2), the language of Iceland
• Israel (NATO country code), a Middle Eastern nation
• Istrebitel Sputnikov or interceptor of satellites, a Russian anti-satellite weapon

Words

Other words formed from the letters "is" include:

• "is" (plural "ises"), anything factual, empirical, actual, or spatiotemporal, in is-ought philosophy
• "is", the Anglo-Saxon form of the rune Isaz
• Is or I's, plural of any of several meanings of "I", particularly:
  • I formations in American football
  • Incompletes, scores used in academic grading in North America
  • Ones in Roman numerals
  • Particular affirmative premises in syllogistic logic, the third premise form coded by a vowel
  • Selves known by the pronoun "I"
• Is or Hīt, an Iraqi town on the Euphrates
• Is or Ys (also Ker-Ys or Ville d'Is), a mythical city of 5th-century Brittany
• "is-" (Greek isos), a prefix similar to "iso-", meaning equal, homogeneous, or uniform
• I"s, a manga by Masakazu Katsura with main characters Ichitaka and Iori
• s, imaginary units in the complex number system
• s, unit vectors along the x-axis

See also

• E-Prime, a modified English syntax and vocabulary lacking all forms of "to be"
• Klingon language, a fictional language in the Star Trek universe lacking the verb "to be"
• Orang Asli, a Malaysian people whose language lacks the verb "to be"
• Sioux languages, some of which lack the verb "to be"
• Lexus IS a performance sedan from Lexus

Source: adapted by the editor from Wikipedia, the free encyclopedia under a copyleft GNU Free Documentation License (GFDL) from the article "IS"