12-letter words containing h, o, a
- hambletonian — one of a superior strain of American trotting horses descended from the stallion Hambletonian.
- hammarskjold — Dag Hjalmar [dahg yahl-mahr] /dɑg ˈyɑl mɑr/ (Show IPA), 1905–61, Swedish statesman: Secretary General of the United Nations 1953–61; Nobel Peace Prize 1961.
- hammer throw — a field event in which the hammer is thrown for distance.
- 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 to hand — of, belonging to, using, or used by the hand.
- hand-holding — the act of holding hands, especially as a sign or token of affection.
- hand-me-down — an article of clothing passed on to another person after being used, outgrown, etc.: The younger children wore the hand-me-downs of the older ones.
- hand-to-hand — close to one's adversary; at close quarters: hand-to-hand combat.
- handsomeness — The quality of being handsome.
- handypersons — Plural form of handyperson.
- hangchow bay — a bay of the East China Sea.
- hanging post — a post from which a door, gate, etc., is hung.
- hangtown fry — a type of omelet to which fried oysters, bacon, and sometimes onions are added.
- hanover park — a city in NE Illinois.
- hansa yellow — a pigment derived from coal tar, characterized chiefly by its brilliant yellow color.
- hansom (cab) — a 19th-cent. two-wheeled covered carriage for two passengers, pulled by one horse: the driver's seat is above and behind the cab
- happy couple — two people in a happy romantic relationship, especially two people who have just married
- haptoglobins — Plural form of haptoglobin.
- harbormaster — A harbormaster is the official in charge of a harbor.
- harbour dues — the fees or charges paid for using a harbour
- harbour seal — a common earless seal, Phoca vitulina, that is greyish-black with paler markings: found off the coasts of North America, N Europe, and NE Asia
- hard done by — If you feel hard done by, you feel that you have not been treated fairly.
- hard-favored — South Midland U.S. (of a person) hard-featured.
- hard-mouthed — of or relating to a horse not sensitive to the pressure of a bit.
- hard-working — industrious; zealous: a hardworking family man.
- haricot bean — Haricot beans are small white beans that are eaten as a vegetable. They are often sold dried rather than fresh.
- haricot vert — green bean.
- hark back to — recall: earlier era
- harmonic law — any one of three laws governing planetary motion: each planet revolves in an ellipse, with the sun at one focus; the line connecting a planet to the sun sweeps out equal areas in equal periods of time (law of areas) or the square of the period of revolution of each planet is proportional to the cube of the semimajor axis of the planet's orbit (harmonic law)
- harmonically — pertaining to harmony, as distinguished from melody and rhythm.
- 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
- harmoniously — marked by agreement in feeling, attitude, or action: a harmonious group.
- harmoniumist — a person who plays a harmonium
- harmonizable — That can be harmonized.
- harmonograph — an instrument using a system of pendulums to produce geometric images
- harmonometer — the equipment used for measuring the harmonic relations of sounds
- harold stark — Harold Raynsford [reynz-ferd] /ˈreɪnz fərd/ (Show IPA), 1880–1972, U.S. admiral.
- harper woods — a city in SE Michigan, near Detroit.
- harpsichords — Plural form of harpsichord.
- harrison red — a pigment consisting of a paratoluidine toner, characterized by its brilliant red color and tendency to bleed.
- harrisonburg — a city in N Virginia.
- harvest home — the bringing home of the harvest.
- harvest moon — the moon at and about the period of fullness that is nearest to the autumnal equinox.
- has no equal — If you say that someone or something has no equal, you think that there is nothing that is as good as them or that reaches the same standard.
- hash cookies — biscuits containing cannabis
- haute-savoie — a department in E France. 1775 sq. mi. (4595 sq. km). Capital: Annecy.
- havana brown — a breed of medium-sized cat with large eyes, large ears, and a sleek brown coat
- have a (good — to feel (strongly) inclined to
- have a go at — attack verbally