h
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h
n. eighth letter of the English alphabet
 
H (hydrogen)
n. colorless odorless gas (lightest of the known elements)

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H
H, or h is a consonant in Esperanto orthography, representing a voiceless velar fricative  or voiceless uvular fricative . Its name in Esperanto is ho (pronounced ).

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H (named aitch , plural aitches, or haitch ) is the eighth letter in the ISO basic Latin alphabet.

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Backspace
Backspace is the keyboard key that originally pushed the typewriter carriage one position backwards, and in modern computer displays moves the cursor one position backwards, deletes the preceding character, and shifts back the text after it by one position.

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H with stroke
H (minuscule: h) is a letter of the Latin alphabet, derived from H with the addition of a bar. It is used in Maltese for a voiceless pharyngeal fricative consonant (corresponding to the letter heth of Semitic abjads). Lowercase is used in the International Phonetic Alphabet for the same sound.

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H+
H+ or h+ may refer to:

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H.
"H." is a song by American rock band Tool. The song was released as the second single from their second album, Ænima, and reached number 23 on the U.S. Mainstream Rock Tracks chart.

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Hadouken!
Hadouken! are an English grindie, new rave, dance-punk band who formed in London in October 2006 by singer, writer and producer James Smith, alongside his girlfriend, synth player Alice Spooner, guitarist Daniel "Pilau" Rice, guitarist Christopher "Chris" Purcell and drummer Nick Rice. The band name is taken from the name of a special attack in the Street Fighter video game series. It was in Leeds that Hadouken! began their own record label, Surface Noise Records.

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Hamiltonian mechanics
Hamiltonian mechanics is a reformulation of classical mechanics that was introduced in 1833 by Irish mathematician William Rowan Hamilton.

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Header file
In computer programming, header file is a file that allows programmers to separate certain elements of a program's source code into reusable files. Header files commonly contain forward declarations of classes, subroutinesvariables, and other identifiers. Programmers who wish to declare standardized identifiers in more than one source file can place such identifiers in a single header file, which other code can then include whenever the header contents are required. This is to keep the interface in the header separate from the implementation. The C standard library and C++ standard library traditionally declare their standard functions in header files.

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Hydride
In chemistry, a hydride is the anion of hydrogen, H-, or, more commonly, a compound in which one or more hydrogen centres have nucleophilic, reducing, or basic properties. In compounds that are regarded as hydrides, hydrogen is bonded to a more electropositive element or group. Compounds containing metal or metalloid bonds to hydrogen are often referred to as hydrides, even though these hydrogen centres can have a protic character. Almost all of the elements form binary compounds with hydrogen, the exceptions being the noble gases and MnFeCoMoTcRuRhAgWReOsIrPtAuFrRaPm, and some of the actinides.

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Macron below
Macron below, , is a combining diacritical mark used in various orthographies.

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Planck constant
The Planck constant (denoted h, also called Planck's constant) is a physical constant reflecting the sizes of energy quanta in quantum mechanics. It is named after Max Planck, one of the founders of quantum theory, who discovered it in 1900. Classical statistical mechanics requires the existence of h (but does not define its value).

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Quaternion
In mathematics, the quaternions are a number system that extends the complex numbers. They were first described by Irish mathematician Sir William Rowan Hamilton in 1843 and applied to mechanics in three-dimensional space. A feature of quaternions is that the product of two quaternions is noncommutative. Hamilton defined a quaternion as the quotient of two directed lines in a three-dimensional space or equivalently as the quotient of two vectors. Quaternions can also be represented as the sum of a scalar and a vector.

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WordNet 2.0 DictionaryDownload this dictionary
H

Noun
1. a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe
(synonym) hydrogen, atomic number 1
(hypernym) chemical element, element
(hyponym) tritium
(substance-holonym) water, H2O
2. a unit of inductance in which an induced electromotive force of one volt is produced when the current is varied at the rate of one ampere per second
(synonym) henry
(hypernym) inductance unit
(part-meronym) abhenry
3. the 8th letter of the Roman alphabet
(hypernym) letter, letter of the alphabet, alphabetic character
(member-holonym) Roman alphabet, Latin alphabet
4. (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure; "enthalpy is the amount of energy in a system capable of doing mechanical work"
(synonym) heat content, total heat, enthalpy
(hypernym) physical property
(classification) thermodynamics

 
h

Noun
1. the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10\-34 joule-second
(synonym) Planck's constant
(hypernym) factor of proportionality, constant of proportionality


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H (das)
n. h, eighth letter of the English alphabet

Babylon French English dictionaryDownload this dictionary
h
nf. h, eighth letter of the English alphabet


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