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Intergranular corrosion
Intergranular corrosion, also called intergranular attack, is preferential corrosion along a metal's grain boundaries, arising when precipitates deplete the boundaries of corrosion-resistant elements such as chromium.
Interharmonics
Interharmonics are voltage or current components in a power system whose frequencies are not integer multiples of the fundamental supply frequency, such as 50 or 60 Hz.
Interior design
Interior design is a distinct profession that plans non-structural interior environments, selecting materials, furnishings, lighting, and acoustics, and is regulated in most U.S. states and Canadian provinces.
Interior designer
An interior designer is a professional qualified by education, experience, and examination to plan interior spaces, from residences to institutions, covering space planning, materials, lighting, and building codes.
Interjet
Interjet (ABC Aerolíneas) was a Mexican low-cost airline based at Toluca that operated from 2005 to December 2020, at its peak carrying about 20 percent of Mexico's domestic market.
Interkosmos (satellite series)
Interkosmos (Интеркосмос) was a series of scientific Earth satellites launched by the Soviet Union from 1969 to 1991, carrying instruments from socialist partner countries to study the Sun, ionosphere, and magnetosphere.
Interlaced video
Interlaced video, also called interlaced scanning, divides each frame into two fields of alternating scan lines displayed in succession, devised for analog television to reduce flicker and bandwidth, surviving in formats like 1080i.
Interleave-division multiple access
Interleave-division multiple access (IDMA) is a non-orthogonal multiple access scheme in wireless communication, proposed by Li Ping in 2005, that separates simultaneous users by user-specific interleavers rather than distinct spreading codes.
Interleaved 2 of 5
Interleaved 2 of 5, also known as ITF, is a self-checking numeric barcode symbology that encodes each digit pair across bars and spaces, used in distribution and logistics.
Interleaved boost converter
An interleaved boost converter (IBC) is a DC-DC boost converter built from two or more boost phases switched in parallel with a phase shift, cutting ripple and device stress.
Interline agreement
An interline agreement is a commercial arrangement between two airlines in which each accepts the other's tickets, baggage checks, and cargo waybills for single-itinerary travel.
Interline power flow controller
The interline power flow controller (IPFC) is a FACTS device proposed in 1999 that uses shared DC-linked voltage source converters to coordinate power flow on two or more transmission lines.
Interlock (engineering)
An interlock is an engineering arrangement making one element's operation depend on another's state, as when opening a machine guard automatically shuts off power and prevents restarting.
Interlocking concrete pavers
Interlocking concrete pavers are precast concrete units laid on bedding sand so each block is restrained by its neighbors, forming a pavement that shares loads across many blocks.
Intermediate band solar cell
The intermediate band solar cell (IBSC) is a proposed photovoltaic device with an extra band inside the semiconductor bandgap, proposed in 1997 with a theoretical efficiency limit of 63%.
Intermediate bulk container
An intermediate bulk container, or IBC tote, is a rigid or flexible industrial container holding up to 3,000 liters of liquids or solids, sized for pallets and forklifts.
Intermediate cartridge
An intermediate cartridge, also known as an intermediate-power cartridge, is a rifle cartridge between pistol and full-power rifle cartridges in power, first developed in World War II Germany.
Intermediate frequency
An intermediate frequency (IF) is a fixed frequency to which a received radio signal is shifted by mixing, the core of the superheterodyne receiver Edwin Armstrong developed in 1918.
Intermediate-level waste
Intermediate-level waste (ILW) is a class of radioactive waste requiring greater containment than near-surface disposal allows, with little decay heat, arising mainly from spent fuel reprocessing and reactor decommissioning.
Intermediate-range ballistic missile
An intermediate-range ballistic missile (IRBM) is a ballistic missile with a range of 3,000 to 5,500 kilometers, between medium-range and intercontinental missiles; ground-launched IRBMs were banned by the 1987 INF Treaty.
Intermetallic compound
An intermetallic compound is a solid compound of two or more metallic elements at fixed stoichiometric ratios, with an ordered crystal structure unlike either constituent metal.
Intermetallics (journal)
Intermetallics is a monthly peer-reviewed scientific journal published by Elsevier covering the science and engineering of intermetallic compounds, metallic glasses, and high-entropy alloys, founded in 1993 in Barking, England.
Intermittent gear
An intermittent gear, also called a partial or mutilated gear (間欠歯車), is a gear with teeth cut around only part of its circumference, so the output rotates and then dwells.
Intermodal container
An intermodal container, also known as an ISO or freight container, is a standardized steel box that moves between ships, railcars, and trucks without handling the goods inside.
Intermodal container chassis
An intermodal container chassis is a skeletal steel semi-trailer built to carry a shipping container over the road, held by twist-locks; the short trucking move is called drayage.
Intermodal freight transport
Intermodal freight transport moves goods in one and the same loading unit using two or more transport modes like road, rail, or air. It is a type of multimodal transport.
Intermodal Surface Transportation Efficiency Act
The Intermodal Surface Transportation Efficiency Act (ISTEA) is a United States federal law signed by President George H. W. Bush in December 1991 that reorganized federal highway and transit programs.
Intermodulation
Intermodulation is the generation of signals at linear combinations of input frequencies in nonlinear devices such as amplifiers, a principal limit on dynamic range in radio systems.
Intermountain Power Agency
The Intermountain Power Agency is a political subdivision of the State of Utah, organized in 1977, that owns the 1,800 MW Intermountain Power Project serving Utah and California.
Intermountain Power Plant
The Intermountain Power Plant is a power station near Delta, Utah, whose 1,800 MW coal units retired in 2025 for a gas-fired facility moving toward hydrogen.