All articles starting with D

Dictyostelium discoideum

Dictyostelium discoideum, the social amoeba or cellular slime mold described by Raper in 1935, aggregates by cAMP chemotaxis into a fruiting body upon starvation; a haploid model organism for chemotaxis, development, and biomedical research.

Dicyandiamide

Dicyandiamide (DCD), also called cyanoguanidine, is a white crystalline compound made by dimerizing cyanamide, used as a fertilizer nitrification inhibitor and a latent epoxy curing agent.

Dicyclic group

The dicyclic group Dic_n, also called the binary dihedral group, is a finite non-abelian group of order 4n defined by a presentation with generators a and b.

Dicyclohexylamine

Dicyclohexylamine (DCHA) is a colorless, fishy-smelling secondary aliphatic amine, C₁₂H₂₃N, with two cyclohexyl groups, used mainly as a chemical intermediate for vapor-phase corrosion inhibitors and rubber vulcanization accelerators.

Dicyclopentadiene

Dicyclopentadiene (DCPD), with formula C₁₀H₁₂, is a liquid petrochemical formed when cyclopentadiene dimerizes by a Diels-Alder reaction, used chiefly in unsaturated polyester resins and, by ring-opening metathesis polymerization, in tough molded polydicyclopentadiene parts.

Dicycloverine

Dicycloverine, also called dicyclomine (Bentyl, Merbentyl), is a synthetic antimuscarinic antispasmodic (ATC A03AA07) for gastrointestinal smooth muscle spasm, mainly IBS; effective versus placebo in one 1981 RCT but with anticholinergic side effects and contraindicated in infants under 6 months and nursing mothers.

Dicyemida

Dicyemida (Rhombozoa), formerly classed as Mesozoa, are tiny parasites of cephalopod kidneys with about 30-cell bodies, a reduced 67.5 Mb genome, and a disputed spiralian phylogeny.

Dicynodontia

Dicynodontia, dicynodonts, herbivorous beaked therapsid synapsids with paired tusks, lived about 270-201 Ma, dominated Permian-Triassic land herbivore faunas, survived the end-Permian extinction via Lystrosaurus, and went extinct in the Late Triassic.

Did You Hear About the Morgans?

Did You Hear About the Morgans? is a 2009 Marc Lawrence romantic comedy starring Hugh Grant and Sarah Jessica Parker as a separated New York couple placed in witness protection in rural Wyoming after witnessing a murder; critics rated it poorly (Metascore 27, RT 12%).

Did You Know That There's a Tunnel Under Ocean Blvd

Did You Know That There's a Tunnel Under Ocean Blvd is the ninth studio album by Lana Del Rey, released in March 2023 through Polydor Records.

Dida (footballer, born 1973)

Dida (Nelson de Jesus da Silva, born 1973, Irará, Bahia), Brazilian goalkeeper; 2002 World Cup winner, two Champions Leagues with AC Milan (2003, 2007), famed penalty saver; distinct from the 1998-born Dida.

Didache (Διδαχή)

The Didache (Διδαχή), or Teaching of the Twelve Apostles, is an anonymous early Christian manual preserving some of the earliest descriptions of baptism, Eucharist, and fasting.

Didactic method

Didactic method: the strategies and resources a teacher uses to bring about student learning, rooted in Comenius' Didactica Magna and central to the explicit instruction versus discovery learning debate.

Oct 22, 2026

Didactic poem

A didactic poem (German Lehrgedicht) is a poem whose primary purpose is to teach, conveying knowledge or instruction in poetic form; the 18th century saw its last flowering.

Oct 22, 2026

Didactic poetry

Didactic poetry is poetry whose purpose is to teach, presenting subjects such as science, farming, or moral conduct; Hesiod's Works and Days is the earliest surviving example.

Didacticism

Didacticism is a philosophy emphasizing instructional and informative qualities in literature, art, and design, from Greek didaktikos, skilled in teaching. Known for Aesop's Fables, medieval morality plays, and its pejorative modern sense of preachy art.

Oct 10, 2026

Didacus Ximenes

Didacus Ximenes, or Diego Ximénez, was a sixteenth-century Spanish Dominican friar described as a theologian, philosopher, and astronomer who died in 1560. A Salamanca-trained lawyer, he served Archbishop Carranza in a failed 1559 mission to Segovia.

Didaktik

Didaktik was a series of 8-bit home computers made by a cooperative in Skalica, Czechoslovakia, beginning in 1986 with ZX Spectrum clones like the Gama and M.

Didanosine

Didanosine (ddI, Videx, dideoxyinosine), an NRTI antiretroviral for HIV-1; second FDA-approved HIV drug (9 October 1991); withdrawn from U.S. market due to pancreatitis, neuropathy, and mitochondrial toxicity.

Sep 19, 2026

Didanu

Didanu, also written Ditanu or Tidanu, was an Amorite ancestor figure claimed by Hammurabi's dynasty of Babylon and the early Assyrian King List; whether a king of this name existed is uncertain.

Oct 22, 2026

Didarganj Yakshi

The Didarganj Yakshi (दीदारगंज यक्षी) is an ancient Indian life-size sandstone statue of a woman holding a fly-whisk, found on the Ganges bank near Patna in 1917.

Didcot power stations

The Didcot power stations are generating stations at Didcot, Oxfordshire, England: Didcot A, a 2,000 MW coal-fired station built from 1965 to 1974, and the gas-fired Didcot B.

Sep 23, 2026

Didda

Didda (दिद्दा) was queen consort, regent, and finally sovereign ruler of Kashmir, holding effective power from 958 and reigning in her own right from 980/1 until her death in 1003.

Diddy Kong Racing

Diddy Kong Racing is Rare's 1997 Nintendo 64 kart, hovercraft, and plane racer with an adventure hub, boss races against Wizpig, and a 2007 DS remake with track editor and Wi-Fi.

Diddy parties

Diddy parties: Sean Combs's celebrity gatherings, chiefly his all-white White Parties (1998-2009) at his East Hampton estate, distinct from the private "freak-off" sex parties central to his 2025 federal trial and related civil suits.

Didecyldimethylammonium chloride

Didecyldimethylammonium chloride (DDAC, CAS 7173-51-5) is a double-chain quaternary ammonium disinfectant and biocide first registered in 1962, membrane-active, poorly absorbed, approved in the EU for biocidal product-types 1, 2, 3, 4, and 8.

Didelphidae

Didelphidae (American opossums) is the only family of the marsupial order Didelphimorphia, native to the Americas, with 10 g to 2 kg species, 50 teeth, and a generalized ancestral body plan.

Didelphis

Didelphis (large American opossums) is a marsupial genus of six species in Didelphidae, established by Linnaeus in 1758, ranging from central Argentina to southern Canada, including the Virginia opossum D. virginiana.

Didelphodon

Didelphodon is an extinct genus of metatherian mammals from Late Cretaceous North America whose largest species, D. vorax, was a bone- and shell-crushing predator of the dinosaur age.