18-letter words containing h, r, d, i, a
- heteroskedasticity — Alternative spelling of heteroscedasticity.
- high-grade mineral — a mineral fulfilling certain conditions as regards purity or other physical properties
- higher-order macro — A means of expressing certain higher-order functions in a first order language. Proposed by Phil Wadler. Higher-order macros cannot be recursive at the top level but they may contain recursive definitions. E.g. See partial evaluation.
- hit-and-run driver — sb: leaves accident scene
- hither and thither — to or toward this place: to come hither.
- hold a reservation — If a hotel holds a reservation, it keeps a room for someone, and does not give it to someone else.
- honorable ordinary — any of the ordinaries believed to be among those that are oldest or that were the source of the other ordinaries, as the chief, pale, fess, bend, chevron, cross, and saltire.
- honour moderations — (at Oxford University) the first public examination, in which candidates are placed into one of three classes of honours
- hot-water cylinder — a vertical cylindrical tank for storing hot water, esp an insulated one made of copper used in a domestic hot-water system
- hydrocinnamic acid — a white crystalline compound, C 9 H 10 O 2 , with a floral odor, used in perfumes and flavoring.
- hydroflumethiazide — A diuretic drug.
- hydroxyacetic acid — glycolic acid.
- hydroxytryptamines — Plural form of hydroxytryptamine.
- hyperaldosteronism — aldosteronism.
- hypoparathyroidism — Diminished concentration of parathyroid hormone in the blood, which causes deficiencies of calcium and phosphorus compounds in the blood and results in muscular spasms.
- hyposulfurous acid — an acid, H 2 S 2 O 4 , next in a series below sulfurous acid, known only in solution or in the form of its salts.
- ice cream headache — Also called ice-cream headache. a pain in the temples and forehead brought on by quickly consuming very cold food or drink.
- in accordance with — conforming to
- incidental charges — Incidental charges are costs of items and services that are not part of the main bill.
- indecent behaviour — the offence of committing indecent acts
- industrial hygiene — the science that assesses, controls, and prevents occupational factors or sources of stress in the workplace that may significantly affect the health and well-being of employees or of the community in general
- industrial vehicle — a vehicle designed for use in industry
- kitchen-sink drama — a type of drama of the 1950s depicting the sordid aspects of domestic reality
- knight of the road — a tramp
- laugh like a drain — to laugh loudly and coarsely
- lincoln's birthday — February 12, a legal holiday in some states of the U.S., in honor of the birth of Abraham Lincoln.
- lipopolysaccharide — any of a class of polysaccharides to which lipids are attached.
- logarithmus dualis — (mathematics) (ld) Latin for logarithm base two. More commonly written as "log" with a subscript "2". Roughly the number of bits required to represent an integer.
- manhattan district — (during World War II) the code name for a unit of US army engineers established in 1942 to construct secret sites for the development of the atomic bomb
- materials handling — the loading, unloading, and movement of goods, as within a factory or warehouse, especially by the aid of mechanical devices.
- mechanical drawing — drawing, as of machinery, done with the aid of rulers, scales, compasses, etc.
- methylated spirits — ethyl alcohol denatured with methyl alcohol for the purpose of preventing its use as an alcoholic beverage.
- middle high german — the High German language of the period 1100–1500. Abbreviation: MHG.
- middle-of-the-road — favoring, following, or characterized by an intermediate position between two extremes, especially in politics; moderate.
- modular arithmetic — arithmetic in which numbers that are congruent modulo a given number are treated as the same. Compare congruence (def 2), modulo, modulus (def 2b).
- morphine addiction — the fact or condition of being addicted to morphine
- mucopolysaccharide — (formerly) glycosaminoglycan.
- natural childbirth — childbirth involving little or no use of drugs or anesthesia and usually involving a program in which the mother is psychologically and physically prepared for the birth process.
- neighborhood watch — a neighborhood surveillance program or group in which residents keep watch over one another's houses, patrol the streets, etc., in an attempt to prevent crime.
- netherlands guiana — a former name of Suriname.
- neuropsychodynamic — Of or pertaining to neuropsychodynamics.
- northeast corridor — the long, narrow strip of land between Boston, New York City, and Washington, D.C., containing many adjacent urban areas.
- norwegian elkhound — one of a breed of dogs having a short, compact body, short, pointed ears, and a thick, gray coat, raised originally in Norway for hunting elk and other game.
- officer of the day — an officer who has charge of the guard and prisoners on an assigned day at a military installation. Abbreviation: OD, O.D., O.O.D.
- on the danger list — critically ill in hospital
- orthophthalic acid — Chemistry. any of three isomeric acids having the formula C 8 H 6 O 4 , especially the ortho isomer (orthophthalic acid) a colorless, crystalline, slightly water-soluble solid used chiefly in the manufacture of dyes, medicine, and perfume.
- orthotungstic acid — an oxyacid acid of tungsten. Formula: H2WO4
- over and done with — If you say that something is over and done with, you mean that it is completely finished and you do not have to think about it any more.
- paint the town red — a substance composed of solid coloring matter suspended in a liquid medium and applied as a protective or decorative coating to various surfaces, or to canvas or other materials in producing a work of art.
- paper handkerchief — a handkerchief made from tissue paper