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IPhoto
iPhoto was Apple's consumer photo management and basic editing application for Mac OS X, introduced in 2002 and discontinued in 2014, replaced by Photos in April 2015.
IPHWR
IPHWR (Indian Pressurized Heavy Water Reactor) is a family of pressurized heavy water reactors designed in India, using natural uranium fuel and derived from the Canadian CANDU design.
Ipiranga (oil company)
Ipiranga is a Brazilian fuel distribution company and brand that originated with Brazil's first oil refinery, opened in Rio Grande, Rio Grande do Sul, on 7 September 1937, and now belongs to Ultrapar.
IPod
The iPod, also known as the Apple iPod, is Apple's line of portable digital music players, introduced in 2001 and known for holding 1,000 songs.
IPod Classic
The iPod Classic is a hard drive-based portable media player Apple sold from 2007 to 2014, offering up to 160 GB, enough for about 40,000 songs.
IPod Mini
The iPod mini was a small, colorful portable music player made by Apple, sold from 2004 to 2005 and known for introducing the Click Wheel.
IPod Nano
The iPod Nano is a discontinued line of Apple portable media players using flash memory, sold in seven generations from September 2005 to 2015 and discontinued in 2017.
IPod Shuffle
The iPod shuffle was a screenless flash-memory digital music player made by Apple, playing synced songs in random or playlist order, sold from 2005 to 2017.
IPod Touch (6th generation)
IPod Touch (6th generation), model A1574, Apple's July 2015 low-cost iOS handheld with downclocked A8 chip, 4-inch Retina display, 8MP camera, $199-$399 pricing; discontinued 2019, vintage 2024.
IPS panel
An IPS panel (in-plane switching) is a type of liquid-crystal display known for wide viewing angles and stable color, developed by Hitachi in 1995 and common in computer monitors.
IPsec
IPsec, or Internet Protocol Security, is an IETF-standardized suite of protocols at the IP layer providing authentication, integrity, and confidentiality for packets, and a common basis for VPNs.
Iptables
Iptables is the userspace program that configures the Linux kernel's packet filtering and NAT rules, written by Rusty Russell's netfilter project and shipped in Linux 2.4 in 2001.
IPv4
IPv4, also known as Internet Protocol version 4, is the fourth version of the Internet Protocol, carrying Internet traffic with 32-bit addresses since ARPANET adopted it in 1983.
IPv4 address exhaustion
IPv4 address exhaustion is the depletion of the free pool of IPv4 addresses, whose 4.3 billion values could not keep pace with the Internet's growth; the IANA pool ran out in 2011.
IPv6
IPv6 (Internet Protocol version 6, once called IP Next Generation) is the newest version of the Internet Protocol, replacing IPv4's 32-bit addresses with 128-bit addresses, standardized in RFC 8200.
IPv6 address
An IPv6 address is a 128-bit identifier assigned to a device interface under Internet Protocol version 6, replacing IPv4's 32-bit addresses with roughly 340 undecillion possibilities.
IPv6 packet
An IPv6 packet is the unit of data transmitted over Internet Protocol version 6, with a fixed 40-octet header, optional extension headers, and a payload.
IPython
IPython, or Interactive Python, is an open-source command shell for interactive Python computing created by Fernando Pérez in 2001, known for introspection, tab completion, and magic commands.
IQOO
iQOO, vivo's performance-focused smartphone sub-brand launched February 2019 ("I Quest On and On"), makes gaming flagships like the iQOO 15 with Snapdragon 8 Elite Gen 5, Q3 gaming chip, and 7,000 mAh battery.
IR-T1
IR-T1 (Iran-Tokamak 1) is a small experimental tokamak at Islamic Azad University in Tehran, Iran, obtained from China in 1994 and used for diagnostic development and MHD instability studies.
Ir.D.F. Woudagemaal (D.F. Wouda Steam Pumping Station)
Ir.D.F. Woudagemaal (D.F. Wouda Steam Pumping Station) at Lemmer, Friesland, is the largest steam pumping station ever built, opened in 1920, UNESCO-listed since 1998, and still operated by Wetterskip Fryslân to pump excess Frisian water into the IJsselmeer.
Ira Dyer
Ira Dyer (1925–2016) was an American acoustics researcher and professor of ocean engineering at MIT, where he headed the Ocean Engineering Department and led six Arctic acoustics field programs.
Ira J. Pitel
Ira J. Pitel is an American power-electronics engineer who founded Magna-Power Electronics in Flemington, New Jersey, and was elected to the National Academy of Engineering in 2026.
Irache
Irache, in Basque Iratxe, is a former Benedictine monastery in Ayegui, Navarre, Spain, documented since 958 and on the Camino de Santiago; it later housed Navarre's first university.
Iran Air
Iran Air, also known as Iran National Airlines, is the state-owned flag carrier of Iran, founded in 1962 by merging Iranian Airways and Persian Air Services.
Iran Air Flight 655
Iran Air Flight 655 was a Tehran–Dubai passenger flight shot down by the USS Vincennes over the Persian Gulf on 3 July 1988, killing all 290 aboard.
Iran Electronics Industries
Iran Electronics Industries, also known as SAIRAN, is an Iranian state-owned defense conglomerate founded in 1973 that produces radar, communications, and electronic warfare equipment for Iranian weapons systems.
Iran Khodro
Iran Khodro (ایران خودرو), formerly Iran National, is Iran's largest automobile manufacturer. Founded in 1962 by the Khayami brothers, it built the Paykan, Iran's national car.
Iran Mall
Iran Mall (ایران مال) is a huge shopping and cultural complex in northwest Tehran, opened in 2018 and widely cited as the world's largest shopping center by total area.
Iran Open (RoboCup)
The Iran Open, also written IranOpen, is an annual regional RoboCup robotics competition in Iran since 2006, giving teams a venue ahead of the world championship.