12-letter words containing m, l, a
- grimaldi man — a type of Aurignacian man having a negroid appearance, thought to be a race of Cro-Magnon man
- grimsel pass — an Alpine pass in S Switzerland. 7159 feet (2184 meters) high.
- gubernaculum — a part or organ that directs the movement or course of another part.
- gulf of oman — a strait that ultimately links the Arabian Sea and the Persian Gulf
- gulf of siam — an arm of the South China Sea between the Malay Peninsula and Indochina
- habilimented — Clothed.
- haematoblast — any of the undifferentiated cells in the bone marrow that develop into blood cells
- haematolyses — Plural form of haematolysis.
- haematolysis — Haemolysis.
- haematoxylin — Alternative spelling of hematoxylin.
- haematoxylon — any thorny leguminous tree of the genus Haematoxylon, esp the logwood, of tropical America and SW Africa. The heartwood yields the dye haematoxylin
- haemophiliac — A person with haemophilia.
- hair implant — the insertion of synthetic fibers or human hair into the scalp to cover baldness.
- hair removal — depilatory treatment
- half measure — If someone refers to policies or actions as half measures, they are critical of them because they think that they are not forceful enough and are therefore of little value.
- half-monthly — pertaining to a month, or to each month.
- hall bedroom — a small bedroom off a corridor, esp. a small bedroom formed by partitioning off the end of an upstairs corridor
- hall of fame — a national shrine in New York City commemorating the names of outstanding Americans.
- halogen lamp — a gas-filled, high-intensity incandescent lamp having a tungsten filament and containing a small amount of a halogen, such as iodine, that vaporizes on heating and redeposits any evaporated tungsten particles back onto the filament: used especially in motion-picture projectors and automobile headlights.
- hamartiology — the doctrine of sin in Christian theology
- 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 drill — a rock drill operated by compressed air in which the boring bit is not attached to the reciprocating piston
- harlem river — tidal river separating Manhattan Island from the Bronx &, with Spuyten Duyvil Creek, connecting the East River with the Hudson: c. 8 mi (12.9 km)
- harmlessness — The characteristic of being harmless; the absence of harm.
- 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.
- harmoniously — marked by agreement in feeling, attitude, or action: a harmonious group.
- harmonizable — That can be harmonized.
- haulage firm — a firm that transports goods by lorry
- headmasterly — In a manner befitting a headmaster.
- health stamp — a postage stamp with a surcharge that is used to support a health camp
- heath family — the plant family Ericaceae, characterized by evergreen or deciduous shrubs, trees, and woody plants growing in acid soil and having simple leaves, often showy flowers either solitary or in clusters, and fruit in the form of a berry or capsule, and including the azalea, blueberry, cranberry, heather, madrone, mountain laurel, rhododendron, and trailing arbutus.
- hebdomadally — taking place, coming together, or published once every seven days; weekly: hebdomadal meetings; hebdomadal groups; hebdomadal journals.
- heimskringla — a book of the 13th century narrating the history of the kings of Norway by Snorri Sturluson.
- helianthemum — (botany) Any of the genus Helianthemum of rockroses.
- helium flash — the explosive burning of helium in the case of a star of low mass that occurs when the core is so dense that the matter has become degenerate. The burning causes a rapid rise in temperature until it is so high that the gas ceases to be degenerate, after which there is a rapid expansion
- hellgramites — Plural form of hellgramite.
- hellgrammite — the aquatic larva of a dobsonfly, used as bait in fishing.
- helmsmanship — the skill or function of a helmsman
- hematoblasts — Plural form of hematoblast.
- hematocolpos — (medicine) A medical condition in which the vagina fills with menstrual blood, often caused by the combination of menstruation with an imperforate hymen.
- hematologist — the study of the nature, function, and diseases of the blood and of blood-forming organs.
- hemerocallis — the genus comprising the day lilies.
- hemimetaboly — Hemimetabolism.
- hemiplankton — plankton that spend part of their life cycle in a vegetative state on the sea bottom, riverbed, etc. (opposed to holoplankton).
- hemodialyses — Plural form of hemodialysis.
- hemodialysis — dialysis of the blood, especially with an artificial kidney, for the removal of waste products.
- hemodialyzer — artificial kidney.
- hemophiliacs — Plural form of hemophiliac.