16-letter words containing e, d, r, l
- grid declination — the angular difference between true north and grid north on a map
- grounded neutral — Grounded neutral is the situation in which the neutral wire of an electrical supply system is connected to ground.
- half life period — Physics. the time required for one half the atoms of a given amount of a radioactive substance to disintegrate.
- hand screw clamp — a screw that can be tightened by the fingers, without the aid of a tool.
- handling charges — a fee paid to cover the packaging, transport, etc, of a commodity
- hardrock geology — (loosely) of or relating to igneous or metamorphic rocks, as in mining (hard-rock mining) and geology (hard-rock geology)
- head normal form — (theory, reduction) (HNF) A term describing a lambda expression whose top level is either a variable, a data value, a built-in function applied to too few arguments, or a lambda abstraction whose body is not reducible. I.e. the top level is neither a redex nor a lambda abstraction with a reducible body. An expression in HNF may contain redexes in argument postions whereas a normal form may not. Compare Weak Head Normal Form.
- heralds' college — a royal corporation in England, instituted in 1483, concerned chiefly with armorial bearings, genealogies, honors, and precedence.
- hermaphroditical — Alternative form of hermaphroditic.
- heteropalindrome — Something that spells something else when reversed, a semordnilap.
- hexahydroaniline — cyclohexylamine.
- himachal pradesh — a state in N India. 21,495 sq. mi. (55,673 sq. km). Capital: Shimla.
- hodmezovasarhely — a city in SE Hungary.
- hold a brief for — to argue for; champion
- holder condition — Lipschitz condition.
- hopfield network — (artificial intelligence) (Or "Hopfield model") A kind of neural network investigated by John Hopfield in the early 1980s. The Hopfield network has no special input or output neurons (see McCulloch-Pitts), but all are both input and output, and all are connected to all others in both directions (with equal weights in the two directions). Input is applied simultaneously to all neurons which then output to each other and the process continues until a stable state is reached, which represents the network output.
- horsehead nebula — a dark nebula in the constellation Orion, composed of opaque cosmic dust and resembling the head of a horse.
- household chores — tasks such as cleaning, washing, and ironing that have to be done regularly at home
- household troops — the infantry and cavalry regiments that carry out escort and guard duties for a head of state
- humboldt current — a cold Pacific Ocean current flowing N along the coasts of Chile and Peru.
- hundred-year-old — of one hundred years of age
- hyaloid membrane — the delicate, pellucid, and nearly structureless membrane enclosing the vitreous humor of the eye.
- hybrid perpetual — a type of cultivated rose bred from varieties having vigorous growth and more or less recurrent bloom.
- hydrated alumina — a crystalline, water-insoluble powder, Al(OH) 3 or Al 2 O 3 ⋅3H 2 O, obtained chiefly from bauxite: used in the manufacture of glass, ceramics, and printing inks, in dyeing, and in medicine as an antacid and in the treatment of ulcers.
- hydraulic cement — cement that can solidify under water.
- hydroelectricity — pertaining to the generation and distribution of electricity derived from the energy of falling water or any other hydraulic source.
- hydrogen sulfide — a colorless, flammable, water-soluble, cumulatively poisonous gas, H 2 S, having the odor of rotten eggs: used chiefly in the manufacture of chemicals, in metallurgy, and as a reagent in laboratory analysis.
- hydrologic cycle — the natural sequence through which water passes into the atmosphere as water vapor, precipitates to earth in liquid or solid form, and ultimately returns to the atmosphere through evaporation.
- hydrometeorology — the study of atmospheric water, especially precipitation, as it affects agriculture, water supply, flood control, power generation, etc.
- hydrophyllaceous — belonging to the Hydrophyllaceae, the waterleaf family of plants.
- hyperchlorhydria — excessive secretion of hydrochloric acid in the stomach.
- hyperlipoidaemia — Alt form hyperlipoidemia.
- implied warranty — a warranty not stated explicitly by the seller of merchandise or real property but presumed for reasons of commercial or legal custom (distinguished from express warranty).
- in quadruplicate — in four identical copies
- inclined railway — a cable railway used on particularly steep inclines unsuitable for normal adhesion locomotives
- indescribability — (uncountable) The state or characteristic of being indescribable.
- indian liquorice — a woody leguminous climbing plant, Abrus precatorius, native to tropical Asia and naturalized elsewhere, having scarlet black-spotted poisonous seeds, used as beads, and roots used as a substitute for liquorice
- indian wrestling — arm wrestling
- indiscernibility — The state or characteristic of being indiscernible; inability to be observed.
- indiscriminately — not discriminating; lacking in care, judgment, selectivity, etc.: indiscriminate in one's friendships.
- industrial waste — waste materials left over from a manufacturing process in industrial buildings such as factories and mines
- inter-divisional — the act or process of dividing; state of being divided.
- interdependently — mutually dependent; depending on each other.
- interdimensional — Between dimensions.
- interlaced image — progressive coding
- internal auditor — a person who carries out an internal audit
- interrelatedness — reciprocally or mutually related: an interrelated series of experiments.
- intradermal test — a test for immunity or allergy to a particular antigen by observing the local reaction following injection of a small amount of the antigen into the skin.
- inverted nipples — nipples which do not project from the breast but are retracted
- irremediableness — The state or quality of being irremediable.