All articles A–Z

HT-3

HT-3 is a human cervical carcinoma cell line established in 1963 by Jorgen Fogh at Sloan Kettering from a metastatic lymph node, long used as an HPV-negative comparator.

HT-7

HT-7, short for Hefei Tokamak-7, was a superconducting tokamak operated by China's Institute of Plasma Physics in Hefei, commissioned in 1994 from a rebuilt Soviet T-7.

HTC (宏达国际电子股份有限公司)

HTC Corporation, also known as High Tech Computer, is a Taiwanese electronics company founded in 1997 that made the first Android smartphone and now centers on VIVE virtual reality.

HTC Dream

The HTC Dream, sold in most markets as the T-Mobile G1, was the first commercially released Android smartphone, launched in the US in October 2008 at $179.

HTC Vive, VR headset by HTC with Valve, announced March 1, 2015 at MWC, released April 2016; SteamVR Lighthouse room-scale tracking, 90 fps, tracked controllers, first major room-scale consumer VR system.

HTCondor

HTCondor, called Condor until 2012, is an open-source workload management system for high-throughput computing developed by the Center for High Throughput Computing at the University of Wisconsin–Madison.

HTGF

HTGF, or High-Tech Gründerfonds, is a German public-private seed venture capital investor founded in 2005 under a federal government mandate, backing over 800 startups with funds exceeding €3 billion.

HTH-type transcriptional regulator DicA, C-terminal region

HTH-type transcriptional regulator DicA, C-terminal region: the C-terminal region of DicA, a predicted helix-turn-helix (HTH) DNA-binding transcriptional regulator; class-level features of HTH regulators and related phage repressor domain organization.

Oct 22, 2026

Htilominlo

Htilominlo, also known as Nantaungmya or Nadaungmya, was king of the Pagan dynasty of Burma from 1211 to about 1230, credited with founding the Hluttaw council of ministers.

Oct 22, 2026

Htilominlo Temple

Htilominlo Temple, in Pali Trilokamaṅgalā meaning "Blessing of the Three Worlds", is a large two-storeyed Buddhist temple in Bagan, Myanmar, built in the early 13th century by King Nataungmya.

HTML

HTML, or HyperText Markup Language, is the core markup language of the World Wide Web, defining the structure and semantics of web pages. Tim Berners-Lee created it at CERN.

HTML data attributes

HTML data attributes, also called custom data attributes and written data-, are HTML attributes that let authors attach private page-specific data to any element for scripts and CSS.

HTML dialog element

The HTML dialog element represents a modal or non-modal dialog box, such as a dismissible alert or subwindow, with built-in focus trapping and Escape closing when modal.

HTML element

An HTML element is a component of an HTML document, marked by a start tag like and usually an end tag, with attributes and content between them.

HTML5

HTML5, or Hypertext Markup Language 5, is the fifth major revision of the markup language used to build web pages, published as a W3C Recommendation in 2014.

HTMS Chakri Naruebet

HTMS Chakri Naruebet (จักรีนฤเบศร) is the flagship and only aircraft carrier of the Royal Thai Navy, built in Spain on a Spanish design and commissioned in 1997.

Htmx

Htmx is a small JavaScript library, begun as intercooler.js by Carson Gross in 2013, that lets web pages issue AJAX requests and use WebSockets directly from HTML attributes.

Sep 19, 2026

Htoo Group of Companies

Htoo Group of Companies, also known as Htoo Trading, is a Myanmar conglomerate founded by Tay Za in 1990, active in timber, construction, aviation, hotels, and banking.

HTPB

HTPB, or hydroxyl-terminated polybutadiene, is a liquid synthetic rubber used chiefly as the fuel-binder of composite solid rocket propellants and as the liner bonding propellant grains to motor cases.

HTR-10

The HTR-10 is a 10 MW thermal pebble-bed test reactor in Beijing, built by Tsinghua University, China's first high-temperature gas-cooled reactor, which reached criticality in 2000.

HTR-PM

The HTR-PM is a Chinese demonstration nuclear plant at Shidao Bay, Shandong, pairing two pebble-bed high-temperature gas-cooled reactors with one turbine; it reached commercial operation in 2023 as the world's first modular HTGR plant.

Oct 20, 2026

HTR1B

HTR1B (5-HT1B receptor, formerly 5-HT1D beta, UniProt P28222) is an intronless human gene on 6q14.1 encoding a Gi/o-coupled serotonin GPCR that inhibits adenylate cyclase, regulates monoamine release, and is targeted by triptan antimigraine drugs.

Oct 20, 2026

HTR2A

HTR2A (5-HT2A receptor gene, HGNC 5293) is a human chromosome 13q14.2 gene encoding a Gq-coupled serotonin GPCR, the target of psychedelics and a pharmacogenomic marker for antidepressant response.

HTR2C

HTR2C, also called 5-HT2C or formerly 5-HT1C, is the X-linked human gene for a serotonin 2C G protein-coupled receptor, the only GPCR known to undergo RNA editing, targeted by the obesity drug lorcaserin.

HTRA1

HTRA1 (HtrA serine peptidase 1, PRSS11) is a chromosome 10q26 gene encoding a secreted trimeric serine protease that inhibits TGF-beta signaling; loss causes CARASIL and variants link to AMD.

HTS magnet

An HTS magnet is a superconducting magnet made from high-temperature superconductor material, usually REBCO tape, operating at 20 to 30 K and central to compact fusion designs.

HTTP

HTTP, or Hypertext Transfer Protocol, is the stateless request/response protocol that underlies the Web, designed in the early 1990s and evolved through versions HTTP/1.1, HTTP/2, and HTTP/3.

HTTP 301

HTTP 301, "Moved Permanently," is an HTTP status code telling a client a resource has a new permanent URL; browsers follow it, and search engines update their indexes to the new address.

HTTP 303

HTTP 303 See Other is an HTTP status code telling the client to retrieve the response with a GET request from a different URI, commonly used after form submissions.