13-letter words containing h, y, m, e
- dimethylamine — a colourless strong-smelling gas produced from ammonia and methanol, used to produce many industrial and pharmaceutical chemicals
- dimethylketol — acetoin.
- diphenylamine — a colorless, crystalline, slightly water-soluble benzene derivative, C 12 H 11 N, used chiefly in the preparation of various dyes, as a stabilizer for nitrocellulose propellants, and for the detection of oxidizing agents in analytical chemistry.
- domain theory — (theory) A branch of mathematics introduced by Dana Scott in 1970 as a mathematical theory of programming languages, and for nearly a quarter of a century developed almost exclusively in connection with denotational semantics in computer science. In denotational semantics of programming languages, the meaning of a program is taken to be an element of a domain. A domain is a mathematical structure consisting of a set of values (or "points") and an ordering relation, <= on those values. Domain theory is the study of such structures. ("<=" is written in LaTeX as \subseteq) Different domains correspond to the different types of object with which a program deals. In a language containing functions, we might have a domain X -> Y which is the set of functions from domain X to domain Y with the ordering f <= g iff for all x in X, f x <= g x. In the pure lambda-calculus all objects are functions or applications of functions to other functions. To represent the meaning of such programs, we must solve the recursive equation over domains, D = D -> D which states that domain D is (isomorphic to) some function space from D to itself. I.e. it is a fixed point D = F(D) for some operator F that takes a domain D to D -> D. The equivalent equation has no non-trivial solution in set theory. There are many definitions of domains, with different properties and suitable for different purposes. One commonly used definition is that of Scott domains, often simply called domains, which are omega-algebraic, consistently complete CPOs. There are domain-theoretic computational models in other branches of mathematics including dynamical systems, fractals, measure theory, integration theory, probability theory, and stochastic processes. See also abstract interpretation, bottom, pointed domain.
- domino theory — a theory that if one country is taken over by an expansionist, especially Communist, neighbor, party, or the like, the nearby nations will be taken over one after another.
- double whammy — twofold misfortune
- drama therapy — a type of psychotherapy encouraging patients to use dramatic techniques to deal with emotional and psychological problems.
- dysmenorrheal — painful menstruation.
- dysmenorrheic — Of, pertaining to, or experiencing dysmenorrhea.
- dysmenorrhoea — painful menstruation.
- echoic memory — the ability to recapture the exact impression of a sound shortly after the sound has finished
- electrothermy — the use of electrically produced heat for therapeutic purposes
- emphysematous — (medicine) Related, similar to or involving emphysema; swollen, bloated.
- enantiomorphy — the state of being enantiomorphic
- encephalotomy — The dissection of the brain.
- endolymphatic — (anatomy) Pertaining to, or containing, endolymph.
- erythematosus — (pathology) An eruption of red lesions.
- exothermicity — (chemistry, physics) The release of heat during an exothermic reaction.
- fly fisherman — one who fishes by fly-casting
- formal theory — an uninterpreted symbolic system whose syntax is precisely defined, and on which a relation of deducibility is defined in purely syntactic terms; a logistic system
- forty-eightmo — a book size of about 2½ × 4 inches (6 × 10 cm), determined by printing on sheets folded to form 48 leaves or 96 pages. Abbreviation: 48mo, 48°.
- french system — a method of spinning in which fibers of extremely short-staple wool are not twisted before being spun.
- geochemically — In a geochemical manner.
- geomorphology — the study of the characteristics, origin, and development of landforms.
- goodhumoredly — In a good-humored manner.
- grandmotherly — of or characteristic of a grandmother.
- graphemically — In terms of or by means of graphemes.
- grey-thompson — Tanni (Carys Davina) Baroness. born 1969, Welsh wheelchair athlete; won eleven gold medals for Britain in wheelchair racing in the Paralympic Games (1988–2004); a crossbench peer in the House of Lords since 2010
- haemodialyses — Plural form of haemodialysis.
- haemodialysis — (medicine) the use of dialysis to remove waste products from the blood in the case of kidney failure.
- haemodialyzer — a piece of equipment used in haemodialysis to screen the blood to remove unwanted substances
- haemodynamics — a branch of physiology that deals with the circulation of the blood
- he's your man — he's the person needed (for a particular task, role, job, etc)
- headmistressy — typical of the duties and behaviour of a headmistress
- heavy element — any element heavier than helium
- helicoid cyme — an inflorescence, or cyme, in which each flowering branch gives rise to one lateral branch that is coiled snail-like and then expanded.
- helminthology — the scientific study of worms, especially of parasitic worms.
- hemacytometer — hemocytometer.
- hemicolectomy — (surgery) A colectomy involving the removal of only the ascending (right) colon or the descending (left) colon.
- hemocytoblast — a primordial cell capable of developing into any type of blood cell.
- hemocytometer — an instrument for counting blood cells.
- hemolymphatic — a fluid in the body cavities and tissues of invertebrates, in arthropods functioning as blood and in some other invertebrates functioning as lymph.
- hemp agrimony — a European composite plant, Eupatorium cannabinum, having dull purplish flowers.
- herbal remedy — a medical treatment made with herbs
- herd immunity — the immunity or resistance to a particular infection that occurs in a group of people or animals when a very high percentage of individuals have been vaccinated or previously exposed to the infection.
- hermaphrodyte — (archaic) alternative spelling of hermaphrodite.
- heterostylism — the condition of being heterostyled
- hexadactylism — Sexdactyly.
- hexamethylene — cyclohexane.
- holiday-maker — vacationer.