14-letter words containing d, r, a
- heat conductor — a material or device that conducts heat
- heavy hydrogen — either of the heavy isotopes of hydrogen, especially deuterium.
- heavy industry — bulk materials manufacturing
- heavy wizardry — Code or designs that trade on a particularly intimate knowledge or experience of a particular operating system or language or complex application interface. Distinguished from deep magic, which trades more on arcane *theoretical* knowledge. Writing device drivers is heavy wizardry; so is interfacing to X (sense 2) without a toolkit. Especially found in source-code comments of the form "Heavy wizardry begins here". Compare voodoo programming.
- heidelberg jaw — a human lower jaw of early middle Pleistocene age found in 1907 near Heidelberg, Germany.
- heidelberg man — the primitive human being reconstructed from the Heidelberg jaw.
- helicopter dad — a style of child rearing in which an overprotective mother or father discourages a child's independence by being too involved in the child's life: In typical helicopter parenting, a mother or father swoops in at any sign of challenge or discomfort.
- helicopter pad — landing area
- herald's trick — a conventional method of indicating a tincture, as by printing or carving without color.
- here and there — in this place; in this spot or locality (opposed to there): Put the pen here.
- hereditability — heritable.
- hereditariness — (rare) The property of being hereditary.
- hermaphrodites — Plural form of hermaphrodite.
- hermaphroditic — an individual in which reproductive organs of both sexes are present. Compare pseudohermaphrodite.
- hermaphroditus — a son of Hermes and Aphrodite who merged with the nymph Salmacis to form one body
- herniated disk — an abnormal protrusion of a spinal disk between vertebrae, most often in the lumbar region of the spine, causing pain due to pressure on spinal nerves.
- high-card pool — red dog.
- highland dress — the historical costume, including the plaid, kilt or filibeg, and bonnet, as worn by Highland clansmen and soldiers
- highly charged — electrical
- highly trained — that has received a lot of academic or physical training
- hindu calendar — a lunisolar calendar that governs all Hindu and most Indian festivals, known from about 1000 b.c. and subsequently modified during the 4th and 6th centuries a.d.
- hiram woodruff — Hiram, 1817–67, Canadian driver, trainer, and breeder of harness-racing horses.
- hither and yon — Hither and thither means in many different directions or places, and in a disorganized way. In American English, the expression hither and yon is sometimes used.
- hold to ransom — to keep (prisoners, property, etc) in confinement until payment for their release is made or received
- holiday resort — self-contained vacation spot
- homeward bound — going home
- homework diary — a record of homework that has been set
- hooded warbler — a wood warbler, Wilsonia citrina, of the U.S., olive-green above, yellow below, and having a black head and throat with a yellow face.
- hornyhead chub — a small N American fish, Nocomis biguttatus
- hors de combat — disabled or injured
- hospital board — the group of people responsible for the safe and efficient running of a hospital
- hospital drama — a TV programme or series based on events in a hospital
- house of cards — a structure or plan that is insubstantial and subject to imminent collapse, as a structure made by balancing playing cards against each other: The scheme is so overly complicated that it's likely to prove to be just another house of cards.
- household arts — activities such as sewing, cooking, etc, that are conducted in the running of a household
- hradec kralove — a town in the N Czech Republic, on the Elbe River: Austrians defeated by Prussians in Battle of Sadowa 1866.
- hubbard squash — a variety of winter squash having a green or yellow skin and yellow flesh.
- hurricane deck — a deck at the top of a passenger steamer, having a roof supported by light scantlings.
- hybrid warfare — a military strategy in which conventional warfare is integrated with tactics such as covert operations and cyberattacks
- hydraulic lift — an elevator operated by fluid pressure, especially one used for raising automobiles in service stations and garages.
- hydraulic pile — a hollow pile through which a jet of water is forced to wash away the ground beneath.
- hydraulic ramp — a movable ramp operated by pressure transmitted through a pipe by a liquid
- hydrazoic acid — a colorless, very explosive, poisonous liquid, HN 3 , having a penetrating odor and irritating to the eyes and mucous membranes.
- hydriodic acid — a colorless corrosive liquid, HI, an aqueous solution of hydrogen iodide.
- hydroacoustics — the study of sound travelling through water
- hydrocephaloid — resembling hydrocephalus.
- hydrocephalous — Having a swollen head.
- hydrocolloidal — of or relating to a hydrocolloid
- hydrodynamical — Hydrodynamic.
- hydroextractor — a device that dries things by means of the material to be dried being spun around the device's central axis
- hydrographical — Hydrographic.