12-letter words containing h, a, l, m, s
- graham's law — the principle that the rates of diffusion and effusion of a gas are inversely proportional to the square root of its density, proposed by Thomas Graham (1805-69) in 1831
- haematoblast — any of the undifferentiated cells in the bone marrow that develop into blood cells
- haematolyses — Plural form of haematolysis.
- haematolysis — Haemolysis.
- 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.
- 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.
- harmlessness — The characteristic of being harmless; the absence of harm.
- harmoniously — marked by agreement in feeling, attitude, or action: a harmonious group.
- headmasterly — In a manner befitting a headmaster.
- health stamp — a postage stamp with a surcharge that is used to support a health camp
- heimskringla — a book of the 13th century narrating the history of the kings of Norway by Snorri Sturluson.
- 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.
- 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.
- hemodialyses — Plural form of hemodialysis.
- hemodialysis — dialysis of the blood, especially with an artificial kidney, for the removal of waste products.
- hemophiliacs — Plural form of hemophiliac.
- hiram revels — Hiram Rhoades [rohdz] /roʊdz/ (Show IPA), 1822–1901, U.S. clergyman, educator, and politician: first black senator 1870–71.
- 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'
- homo habilis — an extinct species of upright East African hominid having some advanced humanlike characteristics, dated as being from about 1.5 million to more than 2 million years old and proposed as an early form of Homo leading to modern humans.
- homosexually — In a homosexual way.
- human shield — a person or group of people located or intentionally placed in a potential line of fire or in an area likely to be attacked.
- humiliations — Plural form of humiliation.
- hymenoplasty — (medicine) Plastic surgery affecting a woman's hymen, usually involving reconstruction to the unbroken condition ordinarily characteristic of virginity.
- hyperosmolar — Of, pertaining to, or as a result of hyperosmolarity.
- hyperrealism — interest in or concern for the actual or real, as distinguished from the abstract, speculative, etc.
- hypothalamus — a region of the brain, between the thalamus and the midbrain, that functions as the main control center for the autonomic nervous system by regulating sleep cycles, body temperature, appetite, etc., and that acts as an endocrine gland by producing hormones, including the releasing factors that control the hormonal secretions of the pituitary gland.
- imperishable — not subject to decay; indestructible; enduring.
- imperishably — In an imperishable manner.
- in mothballs — a small ball of naphthalene or sometimes of camphor for placing in closets or other storage areas to repel moths from clothing, blankets, etc.
- islamophobia — Alternative capitalization of Islamophobia.
- ismail pasha — 1830–95, viceroy and khedive of Egypt 1863–79.
- isothermally — occurring at constant temperature.
- lachrymosity — suggestive of or tending to cause tears; mournful.
- lady's-thumb — a smartweed, Polygonum persicaria, of the buckwheat family, having pink or purplish flowers and lance-shaped leaves with a spot resembling a thumbprint.
- lamplighters — Plural form of lamplighter.
- lamprophyres — Plural form of lamprophyre.
- languishment — the act or state of languishing.
- lemon squash — lemon soda; a soft drink of lemon juice and soda water.
- lisp machine — 1. (architecture) Any machine (whether notional or actual) whose instruction set is Lisp. 2. (hardware, operating system) A line of workstations made by Symbolics, Inc. from the mid-1970s (having grown out of the MIT AI Lab) to late 1980s. All system code for Symbolics Lisp Machines was written in Lisp Machine Lisp. Symbolics Lisp Machines were also notable for having had space-cadet keyboards.
- longshoreman — a person employed on the wharves of a port, as in loading and unloading vessels.
- lymphangitis — inflammation of the lymphatic vessels.
- lymphoblasts — Plural form of lymphoblast.
- mallophagous — of or relating to any wingless insect of the order Mallophaga
- malnourished — poorly or improperly nourished; suffering from malnutrition: thin, malnourished victims of the famine.