12-letter words containing h, a, k
- hiking trail — a specially designated route for hikers to use
- hill walking — the activity of walking through hilly country for pleasure
- hit the mark — to achieve one's aim; be successful in one's attempt
- hit the sack — a large bag of strong, coarsely woven material, as for grain, potatoes, or coal.
- hkakabo razi — the highest peak in Myanmar, in Kachin state, in the N. 19,294 feet (5881 meters).
- hockey skate — a tubular ice skate having a shorter blade than a racing skate and often having a reinforced shoe for protection.
- holding tank — a tank for the temporary storage of a substance.
- holidaymaker — vacationer.
- holkar state — a former state of central India, ruled by the Holkar dynasty of Maratha rulers of Indore (18th century until 1947)
- holkham hall — a Palladian mansion near Wells in Norfolk: built 1734–59 by William Kent for Thomas Coke
- holoplankton — plankton that spend their entire life cycle as free-swimming organisms (opposed to hemiplankton).
- home banking — a system whereby a person at home or in an office can use a computer with a modem to call up information from a bank or to transfer funds electronically
- hook and eye — a two-piece clothes fastener, usually of metal, consisting of a hook that catches onto a loop or bar.
- horsebreaker — One who trains, or breaks in, horses.
- housebreaker — a person who breaks into and enters a house with a felonious intent.
- hydraulicked — (of an extracted mineral) excavated using water
- hydrocracker — a high-pressure processing unit used for hydrocracking.
- hyperkalemia — an abnormally high concentration of potassium in the blood.
- hyperkalemic — Having a high percentage of potassium in one's blood.
- hyperkinesia — Pathology. an abnormal amount of uncontrolled muscular action; spasm.
- hypermarkets — Plural form of hypermarket.
- hypokalaemia — Alternative form of hypokalemia.
- in the black — lacking hue and brightness; absorbing light without reflecting any of the rays composing it.
- ishikari bay — a bay of the Sea of Japan, on the W coast of Hokkaido, Japan.
- jack-the-lad — a young man who is regarded as a brash, loud show-off
- jackson hole — a valley in NW Wyoming, near the Teton Range: wildlife preserve.
- jenghis khan — Genghis Khan.
- jenghiz khan — Genghis Khan
- john hancock — Herbert Jeffrey ("Herbie") born 1940, U.S. jazz pianist and composer.
- kachina doll — a Hopi Indian doll carved from cottonwood root in representation of a kachina and given as a gift to a child or used as a household decoration.
- kaffeeklatch — Alternative spelling of coffee klatch.
- kaleidophone — an instrument, invented by Professor Charles Wheatstone (1802-1875), consisting of a light on a vibrating rod with a reflecting knob for exhibiting the effect of sound waves
- kamehameha i — ("the Great") 1737?–1819, king of the Hawaiian Islands 1810–19.
- kanchenjunga — a mountain in S Asia, between NE India and Nepal, in the E Himalayas: third highest in the world. 28,169 feet (8586 meters).
- karmadharaya — a compound of two words in which the first is an adjective and the second a substantive, as blackbird, gentleman, or grandson.
- karnaugh map — A Karnaugh map is a pictorial method used to minimize Boolean expressions without having to use Boolean algebra theorems.
- kashmir goat — one of a long-haired breed of goat raised in Tibet and the higher elevations of China, the Indian subcontinent, Afghanistan, and Turkey for its meat, milk, and cashmere wool.
- katamorphism — metamorphism at or near the earth's surface: breaks down complex minerals into simpler ones.
- kath and kim — a personification of the White population of middle Australia
- katharevousa — The purist form of modern Greek used in traditional literary writing, as opposed to the form that is spoken and used in everyday writing (called demotic).
- katharometer — (science) A device used for analyzing gas mixtures by measuring their thermal conductivity.
- keratohyalin — (biology) A protein structure found in granules in the stratum granulosum of the epidermis, which may be involved in keratinization, and in Hassall corpuscles in the thymus.
- keraunograph — an instrument for recording thunderstorms by detecting the radio waves generated
- khachaturian — Aram Ilich [ar-uh m il-yich;; Russian uh-rahm ee-lyeech] /ˈær əm ˈɪl yɪtʃ;; Russian ʌˈrɑm iˈlyitʃ/ (Show IPA), 1903–78, Armenian composer.
- khaibar pass — Khyber Pass.
- killer whale — any of several predatory dolphins, especially the black-and-white Orcinus orca, found in all seas.
- kinaesthesia — kinesthesia.
- kinaesthesis — kinesthesia.
- kinaesthetic — Alternative form of kinesthetic.
- kinchinjunga — Kanchenjunga.