12-letter words containing m, s, h
- 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.
- helmet shell — a predatory marine gastropod of the family Cassidae, characterized by a thick, heavy shell with a broadened outer lip.
- helmsmanship — the skill or function of a helmsman
- helmspersons — Plural form of helmsperson.
- hemapheresis — apheresis.
- hemarthrosis — (pathology) bleeding in the joints.
- 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.
- hematogenous — originating in the blood.
- hematologist — the study of the nature, function, and diseases of the blood and of blood-forming organs.
- hemerocallis — the genus comprising the day lilies.
- hemihydrates — Plural form of hemihydrate.
- hemimorphism — The condition of being hemimorphic.
- hemiparasite — A plant that obtains or may obtain part of its food by parasitism, e.g., mistletoe, which also photosynthesizes.
- hemiscotosis — hemianopsia.
- 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.
- hemodynamics — the branch of physiology dealing with the forces involved in the circulation of the blood.
- hemophiliacs — Plural form of hemophiliac.
- hemopoiesis' — hematopoiesis.
- hemstitching — Present participle of hemstitch.
- hergesheimer — Joseph, 1880–1954, U.S. novelist.
- hermeneutics — the science of interpretation, especially of the Scriptures.
- herstmonceux — a village in S England, in E Sussex north of Eastbourne: 15th-century castle, site of the Royal Observatory, which was transferred from Greenwich between 1948 and 1958, until 1990
- heterogamous — Genetics. having unlike gametes, or reproducing by the union of such gametes (opposed to isogamous).
- heteromerous — having or consisting of parts that differ in quality, number of elements, or the like: a heteromerous flower.
- heteronomous — subject to or involving different laws.
- heteronymous — of, relating to, or characteristic of a heteronym.
- heterosexism — a prejudiced attitude or discriminatory practices against homosexuals by heterosexuals.
- heterotherms — Plural form of heterotherm.
- hi-fi system — a complete system of high-quality sound-reproducing equipment
- hidrocystoma — An adenoma of the sweat glands.
- hindforemost — with the back part in the front place
- hippopotamus — a large herbivorous mammal, Hippopotamus amphibius, having a thick hairless body, short legs, and a large head and muzzle, found in and near the rivers, lakes, etc., of Africa, and able to remain under water for a considerable time.
- hiram revels — Hiram Rhoades [rohdz] /roʊdz/ (Show IPA), 1822–1901, U.S. clergyman, educator, and politician: first black senator 1870–71.
- histiocytoma — A tumour consisting of histiocytes.
- histochemist — someone who specializes in histochemistry
- hit and miss — unpredictable, unreliable
- hit-and-miss — sometimes successful or rewarding and sometimes not.
- hobgoblinism — a belief in hobgoblins
- hofmannsthal — Hugo von [hoo-goh fuh n] /ˈhu goʊ fən/ (Show IPA), 1874–1929, Austrian poet, playwright, and librettist.
- hojatoleslam — a title of respect given to an ayatollah or a middle-ranking Shiite cleric, which means literally 'proof of Islam'
- holmes light — a canister, attached to a life buoy or float, containing calcium carbonate and calcium phosphide, which ignite spontaneously on contact with the water, emitting conspicuous fire and smoke.
- home address — the address of one's house or flat
- home mission — a religious mission operating within the country or territories of the supporting church.
- home posting — an appointment to a position within one's own country
- home staging — the professional service of preparing homes for sale in such a way as to appeal to potential buyers and generate higher selling prices: Realtors who encourage sellers to invest in home staging are reporting substantial monetary returns—for both themselves and their clients.
- home stretch — final stages: of race or journey