12-letter words containing d, i, o
- half holiday — a holiday limited to half a working day or half an academic day.
- half-holiday — a holiday limited to half a working day or half an academic day.
- hamming code — (algorithm) Extra, redundant bits added to stored or transmitted data for the purposes of error detection and correction. Named after the mathematician Richard Hamming, Hamming codes greatly improve the reliability of data, e.g. from distant space probes, where it is impractical, because of the long transmission delay, to correct errors by requesting retransmission.
- hand of writ — handwriting; penmanship.
- hand-holding — the act of holding hands, especially as a sign or token of affection.
- hard-working — industrious; zealous: a hardworking family man.
- harmonichord — a musical instrument resembling an upright piano intended to fuse the sound of a violin with the functionality of a piano, the tone therefore produced using friction rather than through striking
- harpsichords — Plural form of harpsichord.
- harrison red — a pigment consisting of a paratoluidine toner, characterized by its brilliant red color and tendency to bleed.
- have it good — to be in comfortable circumstances
- head station — the main buildings on a large sheep or cattle farm
- hebetudinous — the state of being dull; lethargy.
- hedgehopping — Present participle of hedgehop.
- helicoptered — Simple past tense and past participle of helicopter.
- heliographed — Simple past tense and past participle of heliograph.
- hemichordate — belonging or pertaining to the chordates of the phylum Hemichordata, comprising small, widely distributed, marine animals, as the acorn worms.
- hemispheroid — half of a spheroid.
- hemodialyses — Plural form of hemodialysis.
- hemodialysis — dialysis of the blood, especially with an artificial kidney, for the removal of waste products.
- hemodialyzer — artificial kidney.
- hemodilution — a decreased concentration of cells and solids in blood, usually caused by an influx of fluid.
- hemodynamics — the branch of physiology dealing with the forces involved in the circulation of the blood.
- hemophilioid — (of a disease) resembling hemophilia, but having a different genetic or acquired cause.
- hemorrhoidal — Usually, hemorrhoids. Pathology. an abnormally enlarged vein mainly due to a persistent increase in venous pressure, occurring inside the anal sphincter of the rectum and beneath the mucous membrane (internal hemorrhoid) or outside the anal sphincter and beneath the surface of the anal skin (external hemorrhoid)
- heroic drama — Restoration tragedy, especially that popular in England c1660–1700, using highly rhetorical language and written in heroic couplets.
- herringboned — Simple past tense and past participle of herringbone.
- heterodoxies — Plural form of heterodoxy.
- heterodyning — Present participle of heterodyne.
- heteroploidy — (genetics) The state of being heteroploid.
- hexachloride — a chloride containing six atoms of chlorine.
- hexadecanoic — Of or pertaining to hexadecanoic acid or its derivatives.
- hexafluoride — a fluoride containing six atoms of fluorine.
- hide or hair — the pelt or skin of one of the larger animals (cow, horse, buffalo, etc.), raw or dressed.
- hidrocystoma — An adenoma of the sweat glands.
- hidropoiesis — the production of sweat.
- high and low — having a great or considerable extent or reach upward or vertically; lofty; tall: a high wall.
- high command — the leadership or highest authority of a military command or other organization.
- high-colored — deep in color; vivid.
- high-powered — extremely energetic, dynamic, and capable: high-powered executives.
- highway code — In Britain, the Highway Code is an official book published by the Department of Transport, which contains the rules which tell people how to use public roads safely.
- hindforemost — with the back part in the front place
- hippodroming — (baseball) present participle of hippodrome; Staging games to suit gamblers, especially baseball.
- his-lordship — (often initial capital letter) a term of respect used when speaking of or to certain noblemen (usually preceded by his or your).
- historicized — Simple past tense and past participle of historicize.
- hit the road — a long, narrow stretch with a smoothed or paved surface, made for traveling by motor vehicle, carriage, etc., between two or more points; street or highway.
- hold against — resent sb for sth
- holding tank — a tank for the temporary storage of a substance.
- holiday camp — In Britain, a holiday camp is a place which provides holiday accommodation and entertainment for large numbers of people.
- holiday home — a home that people own in order to holiday in and that is in a different location to the home they usually live in
- holidaymaker — vacationer.