16-letter words containing a, r, o, d
- gravity railroad — a railroad depending partly on the force of gravity for motive power.
- great depression — the economic crisis and period of low business activity in the U.S. and other countries, roughly beginning with the stock-market crash in October, 1929, and continuing through most of the 1930s.
- great horned owl — a large, brown-speckled owl, Bubo virginianus, common in the Western Hemisphere, having prominent ear tufts.
- greater-doxology — Gloria in Excelsis Deo.
- greyhound racing — a sport in which a mechanically propelled dummy hare is pursued by greyhounds around a race track
- grid declination — the angular difference between true north and grid north on a map
- ground substance — Also called matrix. the homogeneous substance in which the fibers and cells of connective tissue are embedded.
- grounded neutral — Grounded neutral is the situation in which the neutral wire of an electrical supply system is connected to ground.
- guaranteed stock — stock for which dividends are guaranteed by a company other than the one issuing the stock.
- gulf of honduras — an inlet of the Caribbean, on the coasts of Honduras, Guatemala, and Belize
- gynandromorphism — an individual exhibiting morphological characteristics of both sexes.
- gynandromorphous — an individual exhibiting morphological characteristics of both sexes.
- hair conditioner — a substance used, often after shampooing, to detangle and improve the condition of the hair. Like shampoo, it is applied to wet hair and then rinsed out after applying.
- hairy woodpecker — a North American woodpecker, Picoides villosus, resembling but larger than the downy woodpecker.
- half life period — Physics. the time required for one half the atoms of a given amount of a radioactive substance to disintegrate.
- hamadryas baboon — a baboon, Papio (Comopithecus) hamadryas, of Ethiopia, the male of which has a mantle of long, dark hair about the head and shoulders: held sacred by the ancient Egyptians.
- hammer and tongs — with great vigor, determination, or vehemence: When he starts a job he goes at it hammer and tongs.
- hang around with — to associate or socialize with
- hanging wardrobe — a wardrobe containing a rail with a large amount of space underneath, so that clothes can be hung on hangers placed onto the rail
- hard put (to it) — having considerable difficulty or trouble
- hard rock mining — (loosely) of or relating to igneous or metamorphic rocks, as in mining (hard-rock mining) and geology (hard-rock geology)
- hard times token — any of a series of U.S. copper tokens, issued 1834–41, bearing a political inscription or advertising message and serving as currency during coin shortages.
- hard-packed snow — snow which becomes very firmly packed as it becomes refrozen due to cold weather conditions rather than melting
- hardrock geology — (loosely) of or relating to igneous or metamorphic rocks, as in mining (hard-rock mining) and geology (hard-rock geology)
- have a word with — discuss
- have been around — be experienced
- have the drop on — a small quantity of liquid that falls or is produced in a more or less spherical mass; a liquid globule.
- 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.
- headed notepaper — notepaper headed with the name and address of a person or organization
- heralds' college — a royal corporation in England, instituted in 1483, concerned chiefly with armorial bearings, genealogies, honors, and precedence.
- hermaphroditical — Alternative form of hermaphroditic.
- hernando de soto — Hernando [her-nan-doh;; Spanish er-nahn-daw] /hərˈnæn doʊ;; Spanish ɛrˈnɑn dɔ/ (Show IPA), or Fernando [fer-nan-doh;; Spanish fer-nahn-daw] /fərˈnæn doʊ;; Spanish fɛrˈnɑn dɔ/ (Show IPA), c1500–42, Spanish soldier and explorer in America.
- herod agrippa ii — died ?93 ad, king of territories in N Palestine (50–?93 ad). He presided (60) at the trial of Saint Paul and sided with the Roman authorities in the Jewish rebellion of 66
- heroin addiction — addiction to the drug heroin
- heteropalindrome — Something that spells something else when reversed, a semordnilap.
- hexahydroaniline — cyclohexylamine.
- hexahydrobenzene — cyclohexane.
- higher education — education beyond high school, specifically that provided by colleges and graduate schools, and professional schools.
- hodmezovasarhely — a city in SE Hungary.
- hold a brief for — to argue for; champion
- homme d'affaires — a businessman.
- hookworm disease — any of certain bloodsucking nematode worms, as Ancylostoma duodenale and Necator americanus, parasitic in the intestine of humans and other animals.
- horizon distance — Television. the distance of the farthest point on the earth's surface visible from a transmitting antenna.
- horseback riding — activity: riding a horse
- horsehead nebula — a dark nebula in the constellation Orion, composed of opaque cosmic dust and resembling the head of a horse.
- horseradish tree — a tropical tree, Moringa pterygosperma, having fragrant white flowers and seeds yielding a commercially useful oil.
- hot and bothered — having or giving off heat; having a high temperature: a hot fire; hot coffee.
- 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.
- hydnocarpic acid — an acid, C 16 H 28 O 2 , obtained from chaulmoogra oil, and used in the treatment of leprosy.