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Hazard symbol
A hazard symbol is a standardized graphical sign, such as a flame, skull and crossbones, or exploding bomb, used to warn of dangers on labels and workplace signs.
Hazardous waste
Hazardous waste is waste that can cause or contribute to serious illness or endanger health and the environment when mismanaged, regulated in the United States under RCRA's cradle-to-grave system since 1976.
Hazarduari Palace
Hazarduari Palace, known to the Nawabs as Bara Kothi, is a neoclassical palace in Murshidabad, West Bengal, built 1829–1837 and named for its roughly 1,000 doors, many false.
Hazelwick and Fanning Island cable stations
The Fanning Island cable station was a British trans-Pacific telegraph relay on Tabuaeran, Kiribati, the only relay between Vancouver Island and Fiji, operating from 1902 to about 1963.
Hazelwood BESS
The Hazelwood BESS is a 150 MW/150 MWh battery in the Latrobe Valley, Victoria, commissioned in 2023 on the site of the retired Hazelwood coal-fired power station.
Hazelwood Mine
The Hazelwood Mine was a brown coal open-cut mine at Morwell in Victoria's Latrobe Valley, which supplied the adjacent Hazelwood Power Station until both closed in 2017.
Hazelwood power station
Hazelwood power station was a 1,600 MW brown coal-fired power station and open-cut mine at Morwell in Victoria's Latrobe Valley, built between 1964 and 1971 and closed in 2017.
Hazira LNG Terminal
The Hazira LNG Terminal is a liquefied natural gas receiving and regasification terminal at Hazira, near Surat in Gujarat, India, commissioned in 2005 and owned by Shell.
Hazira-Vijaipur-Jagdishpur (HVJ) Gas Pipeline
The Hazira-Vijaipur-Jagdishpur (HVJ) gas pipeline, also called the HBJ pipeline, runs from Hazira in Gujarat to Jagdishpur in Uttar Pradesh and was India's first cross-country natural gas pipeline.
Hazrat Nizamuddin railway station (हज़रत निज़ामुद्दीन रेलवे स्टेशन)
Hazrat Nizamuddin railway station, also known as Nizamuddin Railway Station, is one of Delhi's main long-distance terminals, opened in 1926 and handling about 250 trains a day.
Hazrati Imam Complex
The Hazrati Imam Complex, also written Khast Imam or Hastimom, is a religious ensemble in old Tashkent, Uzbekistan, housing the Uthman Quran, one of the oldest Qur'an copies.
HbbTV
HbbTV (Hybrid broadcast broadband TV) is an open standard for interactive television combining broadcast and broadband delivery, developed by the HbbTV Association and published by ETSI.
HBIS Group
HBIS Group, also known as Hesteel Group or Hegang, is a state-owned Chinese steel conglomerate formed in 2008 and headquartered in Shijiazhuang, Hebei, ranking fifth in world steel output.
HBM3
HBM3 is the third-generation High Bandwidth Memory DRAM standard from JEDEC, first mass-produced by SK hynix in 2022 for AI chips like the NVIDIA H100.
HBM4
HBM4 (High Bandwidth Memory 4) is a stacked DRAM memory standard from JEDEC, with up to 3.3 TB/s per stack, first shipped by Samsung in February 2026.
hCalendar
hCalendar is a simple, open microformat for publishing events on the web, mapping iCalendar (RFC 2445) event properties into HTML so software can extract them.
HCL Group
HCL Group is an Indian technology conglomerate founded in 1976 by Shiv Nadar and five colleagues, now spanning technology, healthcare, and talent management with over $14.8 billion in annual revenue.
HCLTech
HCLTech, formally HCL Technologies Limited, is an Indian multinational IT services and consulting company headquartered in Noida; founded by Shiv Nadar in 1976, it is India's third-largest IT services firm, operating in 60 countries.
HCS (traffic software)
HCS (Highway Capacity Software) is a traffic analysis program implementing the Highway Capacity Manual, developed by the McTrans Center at the University of Florida since 1987.
HD DVD
HD DVD, also called High-Definition DVD, was a high-capacity optical disc format developed by Toshiba and NEC that lost the format war to Sony's Blu-ray Disc in 2008.
HD Hyundai Electric
HD Hyundai Electric is a South Korean manufacturer of power equipment, including transformers and switchgear, founded in 1977 within Hyundai Heavy Industries and holding about 25 percent of the North American power transformer market.
HD Hyundai Heavy Industries
HD Hyundai Heavy Industries (HD현대중공업) is a South Korean shipbuilding and heavy-industry company in Ulsan, founded in 1972 and ranked the world's top shipyard since 1983.
HD Radio
HD Radio, also known as NRSC-5, is a digital radio broadcasting system that transmits digital audio alongside analog AM and FM stations, endorsed by the FCC in 2002.
HDBSCAN
HDBSCAN, short for Hierarchical Density-Based Spatial Clustering of Applications with Noise, is a clustering algorithm that finds clusters of varying densities and labels leftover points as noise.
HDF5
HDF5 (Hierarchical Data Format version 5) is a data model, C library, and self-describing file format (.h5/.hdf5) for scientific data, developed by The HDF Group; groups, datasets, no size limits, netCDF-4 builds on it.
HDMI
HDMI (High-Definition Multimedia Interface) is a digital interface standard carrying video and audio from devices such as game consoles and PCs to TVs and monitors.
HDR, Inc.
HDR, Inc. is an employee-owned American architecture, engineering, environmental, and construction services firm headquartered in Omaha, Nebraska, founded in 1917, with more than 14,000 employees in 15 countries.
HDR10
HDR10 is an open, royalty-free high dynamic range video format announced in 2015, using 10-bit color with static metadata and supported across streaming services, Ultra HD Blu-ray, and videogames.
HDV
HDV is a video recording format established in 2003 by Canon, Sharp, Sony, and JVC that records 720p or 1080i high-definition video on standard DV tapes using MPEG-2 compression.
He Dreiht
He Dreiht (Low German for "It spins") is a 960 MW offshore wind farm in the German North Sea, developed by EnBW and Germany's largest, inaugurated in 2026.