In philosophy

• Ideal (ethics)
  Ideal (ethics)
  An ideal is a principle or value that one actively pursues as a goal. Ideals are particularly important in ethics, as the order in which one places them tends to determine the degree to which one reveals them as real and sincere. It is the application, in ethics, of a universal...
  
  , values that one actively pursues as goals
• Platonic ideal, a philosophical idea of trueness of form, associated with Plato

In mathematics

• Ideal (ring theory)
  Ideal (ring theory)
  In ring theory, a branch of abstract algebra, an ideal is a special subset of a ring. The ideal concept allows the generalization in an appropriate way of some important properties of integers like "even number" or "multiple of 3"....
  
  , special subsets of a ring considered in abstract algebra
• Ideal, special subsets of a semigroup
• Ideal (order theory)
  Ideal (order theory)
  In mathematical order theory, an ideal is a special subset of a partially ordered set . Although this term historically was derived from the notion of a ring ideal of abstract algebra, it has subsequently been generalized to a different notion...
  
  , special kind of lower sets of an order
• Ideal (set theory)
  Ideal (set theory)
  In the mathematical field of set theory, an ideal is a collection of sets that are considered to be "small" or "negligible". Every subset of an element of the ideal must also be in the ideal , and the union of any two elements of the ideal must also be in the ideal.More formally, given a set X, an...
  
  , a collection of sets regarded as "small" or "negligible"
• Ideal (Lie algebra), a particular subset in lie algebra

In science

• Ideal chain
  Ideal chain
  An ideal chain is the simplest model to describe a polymer. It only assumes a polymer as a random walk and neglects any kind of interactions among monomers...
  
  , in science, the simplest model describing a polymer
• Ideal gas law
  Ideal gas law
  The ideal gas law is the equation of state of a hypothetical ideal gas. It is a good approximation to the behavior of many gases under many conditions, although it has several limitations. It was first stated by Émile Clapeyron in 1834 as a combination of Boyle's law and Charles's law...
  
  , in physics, governing the pressure of an ideal gas
• Ideal transformer, an electrical transformer
  Transformer
  A transformer is a device that transfers electrical energy from one circuit to another through inductively coupled conductors—the transformer's coils. A varying current in the first or primary winding creates a varying magnetic flux in the transformer's core and thus a varying magnetic field...
  
   having zero resistance and perfect magnetic threading
• Ideal Final Result
  Ideal Final Result
  Ideal final result is a description of the best possible solution for the problem situation , regardless of the resources or constraints of the original problem...
  
  , in TRIZ methodology, the best possible solution
• Ideality (phrenology), in phrenology, the disposition towards refinement and perfection
• Thought experiment
  Thought experiment
  A thought experiment or Gedankenexperiment considers some hypothesis, theory, or principle for the purpose of thinking through its consequences...
  
  , sometimes called an ideal experiment
• Ideal type
  Ideal type
  Ideal type , also known as pure type, is a typological term most closely associated with antipositivist sociologist Max Weber . For Weber, the conduct of social science depends upon the construction of hypothetical concepts in the abstract...
  
  , a social science term
• Ideal solution
  Ideal solution
  In chemistry, an ideal solution or ideal mixture is a solution with thermodynamic properties analogous to those of a mixture of ideal gases. The enthalpy of solution is zero as is the volume change on mixing; the closer to zero the enthalpy of solution is, the more "ideal" the behavior of the...
  
  , a solution with thermodynamic properties analogous to those of a mixture of ideal gases

Entertainment

• Ideal (TV series)
  Ideal (TV series)
  Ideal is a British comedy-drama, or dark comedy originally broadcast on digital channel BBC Three, created by Graham Duff and produced by BBC Comedy North and Baby Cow Productions. It stars Johnny Vegas as small-time cannabis dealer Moz....
  
  , a British situation comedy
• Ideal (band)
  Ideal (band)
  Ideal are an R&B quartet from Houston, Texas, United States. The group Ideal debuted in 1999 and is composed of brothers Maverick and Swab, their cousin PZ and high school friend J-Dante...
  
  , late 1990s/2000s American R&B group
• Ideal (German band)
  Ideal (German band)
  Ideal was one of the more successful German Neue Deutsche Welle music groups. It is best known for the songs "Blaue Augen" , "Berlin", and "Monotonie" .- History :...
  
  , early 1980s German rock group
• Ideal Toy Company
  Ideal Toy Company
  Ideal Toy Company was founded as Ideal Novelty and Toy Company in New York in 1907 by Morris and Rose Michtom after they had invented the Teddy bear in 1903. The company changed its name to Ideal Toy Company in 1938...
  
  , a now defunct toy company
• Ideal (album)
  Ideal (album)
  Ideal is the eponymous debut album by R&B group Ideal released on August 24, 1999 by Virgin Records US.The album sold 615,000 units in the U.S., according to Nielsen SoundScan, and was certified Gold by the RIAA. It features the hit single "Get Gone", which reached #13 on the Billboard Hot 100...
  
  , the 1999 eponymous debut album by the R&B group

Other uses

• Changhe Ideal, a city car produced by a joint-venture of Changhe and Suzuki
• IDEAL Scholars Fund
  IDEAL Scholars Fund
  The Initiative for Diversity in Education and Leadership Scholars Fund, a program of the Level Playing Field Institute, was founded in 2001 by a group of University of California, Berkeley alumni, including Freada Klein...
  
  , an American scholarship program for underrepresented students
• Ideal, Georgia
  Ideal, Georgia
  Ideal is a city in Macon County, Georgia, United States. The population was 518 at the 2000 census.-History:The town was originally named Joetown, but when two railroad executives stopped in the town, one proclaimed it an "ideal" place for a railroad station, and the other declared he'd just named...
  
  , a community in the United States
• iDEAL
  IDEAL
  iDEAL is an Internet payment method in the Netherlands, based on online banking. Introduced in 2005, this payment method allows customers to buy securely on the Internet using direct online transfers from their bank account. iDEAL processed 4,5 million transfers in 2006, 15 million transfers in...
  
  , an online payment method in the Netherlands
• Ideal Industries
  Ideal Industries
  Ideal Industries is an American company that produces connectors, hand tools, testers, and meters for the electrical and telecommunications industries.- History :...
  
  , an American manufacturer of electrical connectors and tools