A type or type A may refer to: *

A-type asteroid A-type asteroids are relatively uncommon inner-belt asteroids that have a strong, broad 1 μm olivine feature and a very reddish spectrum shortwards of 0.7 μm. They are thought to come from the completely differentiated mantle of an asteroid ...

, a type of relatively uncommon inner-belt asteroids *

A type blood The ABO blood group system is used to denote the presence of one, both, or neither of the A and B antigens on erythrocytes. For human blood transfusions, it is the most important of the 43 different blood type (or group) classification system ...

, a type in the ABO blood group system * A-type inclusion, a type of cell inclusion *

A-type potassium channel Voltage-gated potassium channels (VGKCs) are transmembrane channels specific for potassium and sensitive to voltage changes in the cell's membrane potential. During action potentials, they play a crucial role in returning the depolarized ce ...

, a type of voltage-gated potassium channel *

A type proanthocyanidin A type proanthocyanidins are a specific type of proanthocyanidins, which are a class of flavonoid. Proanthocyanidins fall under a wide range of names in the nutritional and scientific vernacular, including oligomeric proanthocyanidins, flavonoids, ...

, a specific type of flavonoids *

A-type star An A-type main-sequence star (A V) or A dwarf star is a main-sequence (hydrogen-burning) star of spectral type A and luminosity class V (five). These stars have spectra defined by strong hydrogen Balmer absorption lines. They measure between 1 ...

, a class of stars * Type A Dolby Noise Reduction, a type of Dolby noise-reduction system * Type A climate, a type in the Köppen climate classification * Type A flu, a type of influenza virus *

Type A evaluation of uncertainty In metrology, measurement uncertainty is the expression of the statistical dispersion of the values attributed to a measured quantity. All measurements are subject to uncertainty and a measurement result is complete only when it is accompanied b ...

, an uncertainty in measurement that can be inferred, for example, from repeated measurement * Type A (label), a music label that for example produced the 2004 album '' What Doesn't Kill You...'' by Candiria *

Type A personality Type A and Type B personality hypothesis describes two contrasting personality types. In this hypothesis, personalities that are more competitive, highly organized, ambitious, impatient, highly aware of time management, or aggressive are labeled ...

, a personality type in the Type A and Type B personality theory *

Type A submarine The was a class of submarine in the Imperial Japanese Navy (IJN), which served during the Second World War. The ''Type-A'' submarines were built to take a role of the command ships for submarine squadrons. For this reason they had equipment for ...

, a class of submarines in the Imperial Japanese Navy which served during the Second World War * Hemophilia type A, a type of haemophilia *

Renault A-Type engine Groupe Renault ( , , , also known as the Renault Group in English; legally Renault S.A.) is a French multinational automobile manufacturer established in 1899. The company produces a range of cars and vans, and in the past has manufactured ...

, a straight-4 automobile engine *

Toyota Type A engine The Type A engine was a straight-six engine produced from 1935 through 1947 by Toyota. The Type B was a technically more advanced version of the Type A. There was an enlarged version of this, called the Type D, but it did not enter production. The ...

Vauxhall A-Type The Vauxhall 20 h.p. chassis code A, was a four-cylinder medium-sized car manufactured by Vauxhall from 1908 to 1914 with one more built in 1920. It was the first production Vauxhall designed by Laurence Pomeroy. It became a highly acclaimed ...

, a car manufactured by Vauxhall Motors from 1908 to 1915 *

Type A (artist collective) Type A is the collaboration of Adam Ames (born 1969) and Andrew Bordwin (born 1964). They have been collaborating since 1998, working in a variety of media including video, performance, installation, photography, sculpture, drawing and needlepoint ...

, a pair of New York-based artists named Adam Ames and Andrew Bordwin *

A-type granite A-type granite is a particular category of the S-I-A-M or 'alphabet' system which classifies granitoids and granitic rock by their photoliths or source.1. Winter, John D. (2014). ''Principles of igneous and metamorphic petrology'' (Second ; Pe ...

a type of granite rock *

Adenosine receptor The adenosine receptors (or P1 receptors) are a class of purinergic G protein-coupled receptors with adenosine as the endogenous ligand. There are four known types of adenosine receptors in humans: A1, A2A, A2B and A3; each is encoded by a di ...

See also