Data from The Lancet shows Heroin to be the most dependence causing and most harmful of 20 drugs. Heroin (INN: diacetylmorphine, BAN: diamorphine) is a semi-synthetic opioid synthesized from morphine, a derivative of the opium poppy. It is the 3,...

Hungary's international license plate code

Hydrogen (pronounced /ˈhaɪdrədʒən/), is the chemical element represented by the symbol H and an atomic number of 1. At standard temperature and pressure it is a colourless, odorless, nonmetallic, tasteless, highly flammable diatomic gas...

Montreal's Canadian postal code prefix

Hubble constant

A hospital is an institution for health care, often but not always providing for longer-term patient stays. Today, hospitals are usually funded by the state, health organizations (for profit or non-profit), health insurances or charities, including...

<math>\mathbb{H}</math> or quaternions

Magnetic field strength or intensity

Heat content or enthalpy

<math>\begin{matrix}H(X)\end{matrix}</math> or information entropy

Hamiltonian mechanics

Handcuffs are restraint devices designed to secure an individual's wrists close together. They comprise two halves, linked together by a chain or hinge. Each half has a rotating part which engages with a ratchet which is closed around a person's wrist....

Adrian Smith or H, guitarist for Iron Maiden

"H.", a song by Tool

h, the convection coefficient

h, an album by hitomi

h, an abbrievation for hour

[H], the ASCII representation of HardOCP's logo

h (ipa) or voiceless glottal fricative in the International Phonetic Alphabet

Ian Watkins (Steps) or H, formerly of the group Steps

H (NYCS), the Rockaway Park Shuttle service of the New York City Subway system

Haplogroup H (mtDNA)

Isoniazid's World Health Organisation abbreviation

H, Hauptstimme in Second Viennese School scores

Hurst exponent in fractal geometry

Planck's constant

Steve Hogarth or h, vocalist for Marillion

Ecchi, lewd

H(x) or heaviside step function

^H or backspace

H (film), a 2002 Korean film

Histidine (abbreviated as His or H)[1] is one of the 20 most common natural amino acids present in proteins. In the nutritional sense, in humans, histidine is considered an essential amino acid, but mostly only in children. Its codons are CAU and CAC....

Haplogroup H (Y-DNA)

"H" (song), a song by Ayumi Hamasaki

H, a corner point joining four edges of the Brillouin zone

Hecto, the SI prefix for hundred, 10²

Edgar Hardcastle or H., a theoretician of Marxian economics

H (S-train), a train service in Metropolitan Copenhagen, Denmark

H (musical note) the seventh note of the solfege in continental European notation

H (gang rapist), an unnamed member of a Lebanese-Australian gang rape squad in the Sydney gang rapes

henry (inductance), the SI derived unit for electrical inductance

H band, a NATO radio range

H number, the listing reference of music by Honegger and Martinů in the catalogues by Harry Halbreich

The word helipad is a portmanteau meaning helicopter landing pad, a landing area for helicopters. Though helicopters can usually land anywhere flat, a fabricated helipad provides a clearly marked hard surface away from obstacles where a helicopter can...

h (Cyrillic) or shha, a letter of the Cyrillic alphabet

H (French TV series)

Dimensionless Hubble parameter

H is the eighth letter of the Latin alphabet. H may also refer to:

A • B • C • D • E • F • G • H • I • J • K • L • M • N • O • P • Q • R • S • T • U • V • W • X • Y • Z