12-letter words containing i, s, m
- hamstringing — Present participle of hamstring.
- harmoniously — marked by agreement in feeling, attitude, or action: a harmonious group.
- harmoniumist — a person who plays a harmonium
- harvest mite — chigger (def 1).
- harvest time — season when crops are gathered
- haussmannize — to rebuild in a similar fashion as Haussmann rebuilt Paris
- headmistress — a woman in charge of a private school.
- hegemonistic — the policy or practice of hegemony to serve national interests.
- heimskringla — a book of the 13th century narrating the history of the kings of Norway by Snorri Sturluson.
- helichrysums — Plural form of helichrysum.
- heliotropism — heliotropic tendency or growth.
- 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
- hemapheresis — apheresis.
- hemarthrosis — (pathology) bleeding in the joints.
- 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.
- heterosexism — a prejudiced attitude or discriminatory practices against homosexuals by heterosexuals.
- 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
- 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 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.
- homebuilders — Plural form of homebuilder.
- homeopathist — a person who practices or favors homeopathy.
- homesickness — sad or depressed from a longing for home or family while away from them for a long time.
- homesteading — a dwelling with its land and buildings, occupied by the owner as a home and exempted by a homestead law from seizure or sale for debt.