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Điêu tàn
Điêu tàn is the 1937 debut poetry collection of Vietnamese poet Chế Lan Viên, published at age 17 and inspired by the ruins of the old Champa kingdom.
Dieulafoy's lesion
Dieulafoy's lesion, also called exulceratio simplex or caliber-persistent artery, is an abnormally large submucosal GI artery that erodes through mucosa and causes sudden severe bleeding, mostly near the gastroesophageal junction, treated endoscopically.
Dieumerci Mbokani
Dieumerci Mbokani (Dieudonné Mbokani Bezua), Congolese centre-forward born 1985 in Kinshasa; 2012 Belgian Golden Boot winner with 401 points, five league titles with Standard and Anderlecht, 22 goals in 48 DR Congo caps, retired 2025.
Diezani Alison-Madueke
Diezani K. Alison-Madueke, born 1960, is a Nigerian politician who served as Minister of Petroleum Resources from 2010 to 2015, the first woman to hold the office.
Difamilast
Difamilast (MM-36, OPA-15406), brand ADQUEY, is a topical PDE-4 inhibitor ointment for mild-to-moderate atopic dermatitis; first approved in Japan 2021, in the US 2026, dosed twice daily.
Difelikefalin
Difelikefalin (CR845; Korsuva, Kapruvia) is a synthetic peptide kappa-opioid receptor agonist, given IV 0.5 mcg/kg after hemodialysis three times weekly, approved in 2021 (US) and 2022 (EU) for moderate-to-severe chronic kidney disease-associated pruritus in adults on hemodialysis.
Difemerine
Difemerine (difemerin, Luostyl) is a synthetic tertiary-amine anticholinergic antispasmodic, ATC A03AA09, formula C20H25NO3, withdrawn in Germany in 1986 for frequent adverse effects.
Difenacoum
Difenacoum (CAS 56073-07-5), a second-generation 4-hydroxycoumarin anticoagulant rodenticide first described in 1975; inhibits vitamin K epoxide reductase, killing rats and mice, with resistance and secondary-poisoning concerns.
Difenoconazole
Difenoconazole (CAS 119446-68-3), a systemic triazole (DMI) fungicide inhibiting fungal CYP51 ergosterol synthesis; sold as Dividend, Inspire Super; EU-approved to 2026, top-15 fungicide, persistent in soil.
Difenoxin
Difenoxin, also called difenoxin hydrochloride, brand Motofen, is a phenylpiperidine antidiarrheal, active metabolite of diphenoxylate, chemically related to meperidine, marketed with atropine sulfate as a Schedule IV prescription tablet.
Difenoxuron
Difenoxuron (CAS 14214-32-5), also sold as Lironion or Pinoran, is an obsolete phenylurea post-emergence herbicide for broadleaved weeds in alliums; a photosystem II inhibitor, not approved in the EU since 2002.
Difenzoquat
Difenzoquat (Avenge) is a quaternary ammonium, postemergent herbicide for wild oat control in barley and wheat; first registered 1975, persistent and soil-bound, U.S. products cancelled 2010 and not EU-approved.
Difethialone
Difethialone (LM-2219) is a second-generation, single-dose anticoagulant rodenticide introduced in 1986, a benzothiopyranone derivative inhibiting vitamin K epoxide reductase, restricted to professional use in the US and highly toxic to raptors.
Diff
Diff is a Unix utility that compares two files line by line and outputs the changes needed to convert one into the other, often called a patch.
Diff-Quik stain
Diff-Quik stain is a rapid Romanowsky stain for blood smears and cytology, completing in seconds to minutes what Wright-Giemsa staining takes 20 to 30 minutes.
Diff'rent Strokes
Diff'rent Strokes is an American sitcom, developed by Norman Lear, starring Gary Coleman and Todd Bridges as Harlem brothers adopted by wealthy Phillip Drummond, aired 1978 to 1986.
Diffa
Diffa is an administrative region of eastern Niger bordering Chad and Nigeria, watered by Lake Chad and the Komadougou. Livestock dominates its economy; Boko Haram conflict since 2015 displaced hundreds of thousands.
DiffDock
DiffDock is a diffusion generative model developed at MIT that predicts the binding pose of a small-molecule ligand to a protein, a task known as molecular docking.
Diffeomorphism
A diffeomorphism is a smooth bijection between differentiable manifolds whose inverse is also smooth. Diffeomorphic manifolds share all differential-topological properties, and classification up to diffeomorphism is finer than up to homeomorphism.
Diffeomorphism invariance
Diffeomorphism invariance is the symmetry of a theory under smooth transformations of the spacetime manifold, a hallmark of general relativity central to loop quantum gravity.
Differdange
Differdange (FC Differdange 03, FC Déifferdeng 03), Luxembourgish football club founded 2003 by merger of Red Boys and AS Differdange; National Division champion 2024-25, based at Differdange's Thillenberg ground.
Difference engine
A difference engine, or difference machine, is a mechanical calculating machine that computes and prints polynomial tables using only repeated addition, designed by Charles Babbage from 1821.
Difference gel electrophoresis
Difference gel electrophoresis, also called two-dimensional difference gel electrophoresis (DIGE), is a proteomics method that labels protein samples with fluorescent dyes and runs them on one gel.
Difference in differences
Difference in differences (DiD), also called diff-in-diff, is a quasi-experimental method estimating causal effects by comparing treated and untreated groups' changes over time, first applied by John Snow in 1855.
Difference of two squares
The difference of two squares is the algebraic identity a² − b² = (a − b)(a + b), one of the most recognizable factoring patterns in elementary algebra.
Difference set
A difference set is a subset of a finite group whose pairwise quotients represent every nonidentity element exactly λ times, used to build symmetric block designs.
Difference spectroscopy
Difference spectroscopy is a spectroscopic technique that records the difference between a sample spectrum and a reference spectrum, isolating small absorption changes across UV-Vis, infrared, and Raman methods.
Difference-frequency generation
Difference-frequency generation (DFG) is a second-order nonlinear optical process in which two frequencies in a non-centrosymmetric crystal produce radiation at their difference, a key route to tunable mid-infrared output.
Different Class
Different Class (Pulp album, released in Japan as Common People), fifth studio album by the Sheffield Britpop band, 30 October 1995 on Island; UK number 1, 1995 Mercury Music Prize winner, lead single "Common People".
Different Seasons
Different Seasons (1982, Viking Press) is Stephen King's four-novella collection pairing Shawshank Redemption, Apt Pupil, The Body, and The Breathing Method with the seasons; it inspired Stand By Me and the seven-time Oscar-nominated Shawshank film.