All articles A–Z

Dry ice

Dry ice, also sold as Cardice, is the solid form of carbon dioxide, used as a refrigerant because it sublimes directly to gas at −78.5 °C, leaving no liquid residue.

Dry intrusion

A dry intrusion is a stream of cold, very dry air that descends from the upper troposphere behind a cyclone's cold front, producing the cloud-free dry slot.

Dry Leaf (ხმელი ფოთოლი) is a 2025 Germany-Georgia road film by Alexandre Koberidze, 186 minutes, shot on a Sony Ericsson W595 phone, about a father searching rural Georgia's football fields for his missing photographer daughter; Locarno Special Mention and FIPRESCI winner.

Dry lubricant

A dry lubricant, or solid lubricant, is a solid material that reduces friction and wear without oil or grease, using materials like graphite, molybdenum disulfide, and PTFE.

Sep 29, 2026

Dry machining

Dry machining is metal cutting without cutting fluid, relying on coated tools, tool geometry, and adjusted cutting parameters to manage heat, cutting fluid costs, and health hazards.

Dry milling (ethanol production)

Dry milling, also called the dry-grind process, is the dominant method of producing fuel ethanol from corn in the United States, accounting for about 90% of U.S. ethanol output.

Dry needling

Dry needling, also called intramuscular stimulation, is a technique in which thin, solid needles are inserted into myofascial trigger points without injecting any drug, used to treat neuromusculoskeletal pain.

Oct 22, 2026

Dry plate

A dry plate is a glass photographic negative plate with a gelatin emulsion, introduced by Richard Leach Maddox in 1871 and dominant from 1880 to 1900.

Dry Powder Inhalers

Dry powder inhalers (DPIs) are propellant-free, breath-actuated inhaler devices delivering powdered asthma and COPD drugs to the lungs; lineage runs from the 1948 Aerohalor and 1967 Spinhaler to over 20 marketed devices with pMDI-equivalent efficacy.

Dry pressing

Dry pressing, also called conventional powder pressing, is a ceramic forming process in which a nearly dry powder is compacted in a rigid die and then sintered.

Dry reforming of methane

Dry reforming of methane (DRM) is a catalytic process converting methane and carbon dioxide into synthesis gas, a hydrogen and carbon monoxide mixture usable for fuels.

Dry Spell (song)

"Dry Spell" is a 2026 country single by Kacey Musgraves, released March 11, 2026 on Lost Highway as the lead single from Middle of Nowhere; written with Luke Laird, Shane McAnally, and Josh Osborne, it counts 335 days without sex, peaked at No. 15 on Country Airplay, and earned a CMA Song of the Year nomination.

Dry stack tailings

Dry stack tailings, also called filtered tailings, are mine tailings dewatered to a moist, transportable cake and compacted into stable, unsaturated stacks that need no retaining dam or tailings pond.

Dry sump

A dry sump, or dry sump lubrication, is an engine lubrication system storing oil in an external tank, with scavenge pumps keeping the crankcase dry; widely used in aircraft.

Dry Tortugas Light

The Dry Tortugas Light is an 1858 lighthouse on Loggerhead Key in the Dry Tortugas, Florida, an active aid to navigation until it stopped working in 2014.

Dry Tortugas National Park

Dry Tortugas National Park: remote 100-square-mile U.S. national park about 70 miles west of Key West, Florida, with seven islands, Fort Jefferson (largest all-masonry fort in the Americas), coral reefs, seabird nesting keys, boat-or-seaplane-only access, and no fresh water.

Oct 22, 2026

Dry Valley

Dry Valley (Russian: Sukhodol), also known as Drydale, is a novella by Ivan Bunin, first published in 1912, chronicles the degradation of the Khrushchev gentry family.

Dry van trailer

A dry van trailer is an enclosed, unrefrigerated semi-trailer that hauls palletized freight needing weather protection but no temperature control, the most common type in North American trucking.

Dry water

Dry water, also called empty water, is a powder in which water droplets coated in hydrophobic silica release liquid under stress, studied for gas storage and carbon capture.

Dry well

A dry well, also called a soak well or soak pit, is an underground structure that disposes of stormwater runoff by infiltrating it into the soil.

Oct 22, 2026

Dry-crosslinking tough tissue adhesives

Dry-crosslinking tough tissue adhesives bond to wet tissue by absorbing interfacial water and then forming physical and covalent crosslinks, introduced as MIT's 2019 dry double-sided tape.

Dry-type transformer

A dry-type transformer is a power or distribution transformer insulated and cooled by air and solid materials like epoxy resin instead of oil, favored indoors for fire safety.

Dryad

Dryad (Greek Δρυάς, also Hamadryad Ἁμαδρυάς): Greek tree nymph, from drus 'oak'; hamadryads were born and died with their trees; attested from Pausanias, Apollonius, Virgil, Ovid.

Dryas

Dryas is a genus of dwarf shrubs in the rose family, native to subarctic and subalpine regions of the Northern Hemisphere and best known for the mountain avens.

Dryas Mons

Dryas Mons is a 267 km-wide mountain massif in Terra Sirenum, Mars, named by the IAU in 2020 for a classical albedo feature; its sheet flow deposits are attributed to hydrothermal icy-debris flows.

Dryas octopetala

Dryas octopetala, mountain avens or eightpetal mountain-avens, is a circumpolar arctic-alpine evergreen subshrub of Rosaceae with usually eight-petaled white flowers; it names the Older and Younger Dryas cold periods and is Iceland's national flower.

Dryburgh Abbey

Dryburgh Abbey is the ruin of a Premonstratensian monastery founded in 1150 on the River Tweed in Roxburghshire, Scotland, and the burial place of Sir Walter Scott.

Dryden Vos

Dryden Vos is a fictional Star Wars crime lord, the public face of the Crimson Dawn syndicate in Solo: A Star Wars Story (2018), played by Paul Bettany, based aboard the yacht First Light, secretly answering to Darth Maul, and killed by Qi'ra with his own Kyuzo petar in 10 BBY.

Drygalski (lunar crater)

Drygalski, a large complex lunar impact crater near the Moon's south pole (IAU 1964), named for German polar scientist Erich von Drygalski; about 162 km across with a plagioclase central peak and satellite craters P, Q (Ashbrook), V.