12-letter words containing o, s, m, l
- giant slalom — a slalom race in which the course has more gates and is longer and steeper than that in a regular slalom.
- gila monster — a large, venomous lizard, Heloderma suspectum, of the southwestern U.S. and northwestern Mexico, covered with beadlike scales of yellow, orange, and black.
- gladsomeness — (archaic) gladness.
- glamour puss — a person with an unusually attractive face.
- glamour-puss — a person with an unusually attractive face.
- glaucomatous — Ophthalmology. abnormally high fluid pressure in the eye, most commonly caused either by blockage of the channel through which aqueous humor drains (open-angle glaucoma or chronic glaucoma) or by pressure of the iris against the lens, which traps the aqueous humor (angle-closure glaucoma or acute glaucoma)
- glioblastoma — A highly invasive glioma in the brain.
- glomerulitis — inflammation of the glomeruli of the kidney.
- glossematics — a school of linguistic analysis developed by Louis Hjelmslev (1899–1965) in Copenhagen in the 1930s based on the study of the distribution of glossemes.
- goldsmithery — the occupation of a goldsmith
- goldsmithing — The work of a goldsmith; the forging of gold.
- gormlessness — The state of being gormless.
- gospel music — a now popularized form of impassioned rhythmic spiritual music rooted in the solo and responsive church singing of rural blacks in the American South, central to the development of rhythm and blues and of soul music.
- gulf of siam — an arm of the South China Sea between the Malay Peninsula and Indochina
- haematoblast — any of the undifferentiated cells in the bone marrow that develop into blood cells
- haematolyses — Plural form of haematolysis.
- haematolysis — Haemolysis.
- 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.
- harmoniously — marked by agreement in feeling, attitude, or action: a harmonious group.
- heliotropism — heliotropic tendency or growth.
- helmspersons — Plural form of helmsperson.
- 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.
- 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.
- homebuilders — Plural form of homebuilder.
- homelessness — without a home: a homeless child.
- homeschooled — Simple past tense and past participle of homeschool.
- homeschooler — One who homeschools a student (typically the parent).
- 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.
- homonymously — in a homonymous manner
- homosexually — In a homosexual way.
- humiliations — Plural form of humiliation.
- humourlessly — Alternative spelling of humorlessly.
- hylomorphism — the theory that every physical object is composed of two principles, an unchanging prime matter and a form deprived of actuality with every substantial change of the object.
- 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.
- 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.
- iceland moss — an edible lichen, Cetraria islandica, of arctic regions, containing a starchlike substance used in medicine.
- iconophilism — a taste for pictures and symbols
- illuminators — Plural form of illuminator.
- immobilising — Present participle of immobilise.
- immobilizers — Plural form of immobilizer.