17-letter words containing h, a, d

martha's vineyard — an island off SE Massachusetts: summer resort. About 100 sq. mi. (259 sq. km).
mass merchandiser — a retailer or retail store that seeks to sell large quantities of goods quickly through such means as discounting, customer self-service, or unadorned display and packaging, as in a warehouse.
mechanical digger — a machine used for excavation
medicochirurgical — pertaining to medicine and surgery.
meech lake accord — the agreement reached in 1987 at Meech Lake, Quebec, at a Canadian federal-provincial conference that accepted Quebec's conditions for signing the Constitution Act of 1982. The Accord lapsed when the legislatures of two provinces, Newfoundland and Quebec, failed to ratify it by the deadline of June 23, 1990
merchant of death — a company, nation, or person that sells military arms on the international market, usually to the highest bidder and without scruple or regard for political ramifications.
method invocation — (programming) In object-oriented programming, the way the program looks up the right code to run when a method with a given name is called ("invoked") on an object. The method is first looked for in the object's class, then that class's superclass and so on up the class hierarchy until a method with the given name is found (the name is "resolved"). Generally, method lookup cannot be performed at compile time because the object's class is not known until run time. This is the case for an object method whereas a class method is just an ordinary function (that is bundled with a given class) and can be resolved at compile time (or load time in the case of a dynamically loaded library).
method of payment — cash, credit card, cheque, etc.
methylacetic acid — propionic acid.
mexican hat dance — a dance performed by couples, consisting of eight measures during which the dancers kick out each foot alternately, followed by eight more measures during which they swing around with interlocking arms.
microfiche reader — a machine that displays on a screen a magnified image of a microfiche
mies van der rohe — Ludwig [luhd-wig] /ˈlʌd wɪg/ (Show IPA), 1886–1969, U.S. architect, born in Germany.
mitochondrial dna — DNA found in mitochondria, which contains some structural genes and is generally inherited only through the female line
modern pentathlon — an athletic contest consisting of five different events: horse riding with jumps, fencing with electric épée, freestyle swimming, pistol shooting, and cross-country running
modulo arithmetic — modular arithmetic
muscle dysmorphia — a mental disorder primarily affecting males, characterized by obsessions about a perceived lack of muscularity, leading to compulsive exercising, use of anabolic steroids, etc. Compare body dysmorphic disorder.
narrow-shouldered — having shoulders which do not extend very far from the neck; not broad-shouldered
nightshade family — the plant family Solanaceae, characterized by herbaceous plants, trees, shrubs, and vines having alternate, simple or pinnate leaves, conspicuous flowers, and fruit in the form of a berry or capsule, and including belladonna, eggplant, nightshade, peppers of the genus Capsicum, petunia, potato, tobacco, and tomato.
ninth commandment — “Thou shalt not bear false witness against thy neighbor”: ninth of the Ten Commandments.
nitroxanthic acid — picric acid.
northern rhodesia — former name of Zambia.
northern sporades — a group of Greek islands in the Aegean, lying northeast of Euboea
nuclear threshold — the point in war at which a combatant brings nuclear weapons into use
old norman french — Norman French (sense 1)
old orchard beach — a resort town in S Maine.
old south arabian — a group of four closely related Semitic languages, having a writing system and used from about the eighth to the fifth centuries b.c. in the southern part of Arabia.
old spanish trail — an overland route from Santa Fe, N. Mex., to Los Angeles, Calif., first marked out in 1776 by Spanish explorers and missionaries.
on condition that — a particular mode of being of a person or thing; existing state; situation with respect to circumstances.
on one's deathbed — about to die
on the barrelhead — upon being presented for sale; at the time of delivery
on the foundation — an endowment or legacy for the perpetual support of an institution such as a school or hospital
on the heavy side — tending to be too heavy
on the other hand — the terminal, prehensile part of the upper limb in humans and other primates, consisting of the wrist, metacarpal area, fingers, and thumb.
one of these days — at some future time
orifice discharge — Orifice discharge is a model for calculating how quickly a fluid will come out of a punctured vessel or pipe.
orthovanadic acid — an oxyacid of vanadium, known chiefly in the form of its vanadate salts. Formula: H3VO4
out of one's head — the upper part of the body in humans, joined to the trunk by the neck, containing the brain, eyes, ears, nose, and mouth.
overhead camshaft — a camshaft in an automotive engine that is located in the cylinder head over the engine block rather than in the block. Abbreviation: OHC.
overhead lighting — lighting which throws light downwards by being situated on the ceiling or having a downward shade, etc
pan and tilt head — a mounting device on which a camera may be rotated in a horizontal plane (pan) or in a vertical plane (tilt)
parathyroid gland — any of several small oval glands usually lying near or embedded in the thyroid gland.
parathyroidectomy — the excision of a parathyroid gland.
paratyphoid fever — Also called paratyphoid fever. an infectious disease, similar in some of its symptoms to typhoid fever but usually milder, caused by any of several bacilli of the genus Salmonella other than S. typhi.
partially sighted — unable to see properly so that even with corrective aids normal activities are prevented or seriously hindered
peaches and cream — If you say that a woman or a girl has a peaches and cream complexion, you mean that she has very clear, smooth, pale skin.
peripheral device — peripheral
perth and kinross — a council area of N central Scotland, corresponding mainly to the historical counties of Perthshire and Kinross-shire: part of Tayside Region from 1975 until 1996: chiefly mountainous, with agriculture, tourism, and forestry. Administrative centre: Perth. Pop: 135 990 (2003 est). Area: 5321 sq km (2019 sq miles)
phenylacetic acid — a white crystalline, aromatic acid, C 8 H 8 O 2 , used in the manufacture of penicillin and in perfumes.
phenylformic acid — benzoic acid.
photodissociation — the dissociation or breakdown of a chemical compound by radiant energy.

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