12-letter words containing s, a, h, i
- head station — the main buildings on a large sheep or cattle farm
- headmistress — a woman in charge of a private school.
- headshakings — Plural form of headshaking.
- headshrinker — shrink (def 9).
- hearing loss — diminished ability to hear
- hearing test — a test to establish whether someone's hearing is normal or whether they have suffered some degree of hearing loss
- heartstrings — (obsolete, anatomy) The tendons once thought to brace the heart. (15th-19th c.).
- heat-seeking — A heat-seeking missile or device is one that is able to detect a source of heat.
- heavenliness — (uncountable) The state or quality of being heavenly.
- heavyweights — Plural form of heavyweight.
- heimskringla — a book of the 13th century narrating the history of the kings of Norway by Snorri Sturluson.
- helianthuses — Plural form of helianthus.
- helical scan — denoting a recording technique used with video tapes in which the recorded tracks on the tape are segments of a helix
- helicographs — Plural form of helicograph.
- heliogabalus — (Varius Avitus Bassianus"Marcus Aurelius Antoninus") a.d. 204–222, Roman emperor 218–222.
- 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
- hell-raising — behaviour which causes trouble
- hellaciously — In a hellacious manner.
- 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.
- hemiparasite — A plant that obtains or may obtain part of its food by parasitism, e.g., mistletoe, which also photosynthesizes.
- 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.
- hepadnavirus — Any member of the virus family Hepadnaviridae, capable of causing liver infections in humans and animals.
- hepatotoxins — Plural form of hepatotoxin.
- hernioplasty — an operation for the repair of a hernia.
- hesitatingly — In a hesitating manner.
- hessian boot — a knee-high tasseled boot, fashionable in England in the early 19th century.
- heterauxesis — an unequal or asymmetrical growth of cells, parts of plants or animals
- heteroousian — a person who believes the Father and the Son to be unlike in substance or essence; an Arian (opposed to Homoousian).
- heteroplasia — the replacement of normal cells by abnormal cells, as in cancer.
- heterosocial — relating to or denoting mixed-sex social relationships
- heterotopias — Plural form of heterotopia.
- hexacosanoic — as in hexacosanoic acid
- hexasiloxane — (organic chemistry) Any siloxane having six -Si-O- groups.
- hibernations — Plural form of hibernation.
- hidradenitis — (medicine) inflammation of the sweat glands.
- hidrocystoma — An adenoma of the sweat glands.
- hierarchists — hierarchical principles, rule, or influence.
- hierocracies — Plural form of hierocracy.
- hierophanies — Plural form of hierophany.
- higashiosaka — a city on S Honshu, in Japan, W of Osaka.
- high fashion — haute couture.