12-letter words containing h, a, t, i
- helianthemum — (botany) Any of the genus Helianthemum of rockroses.
- helianthuses — Plural form of helianthus.
- helicobacter — Any member of the Helicobacter bacteria.
- heliotherapy — treatment of disease by means of sunlight.
- hellgramites — Plural form of hellgramite.
- hellgrammite — the aquatic larva of a dobsonfly, used as bait in fishing.
- hemangiomata — See under angioma.
- hemarthrosis — (pathology) bleeding in the joints.
- hematochezia — the passage of bloody stools.
- hematologist — the study of the nature, function, and diseases of the blood and of blood-forming organs.
- hematophobia — Fear of bleeding or the sight of blood.
- hemichordate — belonging or pertaining to the chordates of the phylum Hemichordata, comprising small, widely distributed, marine animals, as the acorn worms.
- hemihydrates — Plural form of hemihydrate.
- hemimetaboly — Hemimetabolism.
- hemiparasite — A plant that obtains or may obtain part of its food by parasitism, e.g., mistletoe, which also photosynthesizes.
- hemiplankton — plankton that spend part of their life cycle in a vegetative state on the sea bottom, riverbed, etc. (opposed to holoplankton).
- hepaticology — the scientific study of bryophyte plants known as hepatics or liverworts
- hepatization — the transformation of tissue into a liver-like substance, esp of the lungs in pneumonia
- hepatotoxins — Plural form of hepatotoxin.
- hepatoxicity — Toxicity that affects the liver.
- hereditament — any inheritable estate or interest in property.
- hereditarian — a person who believes that differences between individuals or groups, including moral and intellectual attributes, are predominantly determined by genetic factors (opposed to environmentalist).
- hereditarily — passing, or capable of passing, naturally from parent to offspring through the genes: Blue eyes are hereditary in our family. Compare congenital.
- heritability — capable of being inherited; inheritable; hereditary.
- hermetically — so as to be airtight: hermetically sealed.
- hernioplasty — an operation for the repair of a hernia.
- herring boat — a fishing boat that specializes in catching herring
- 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).
- heterophobia — Fear or resentment of what is different.
- heterophoria — a latent strabismus of one or both eyes.
- heteroplasia — the replacement of normal cells by abnormal cells, as in cancer.
- heterosocial — relating to or denoting mixed-sex social relationships
- heterotactic — of, relating to, or characterized by heterotaxis.
- heterotopias — Plural form of heterotopia.
- hexadactylic — having six fingers or toes
- hexobarbital — a barbiturate with hypnotic and sedative properties
- 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.
- hieratically — In a hieratic way.
- hierogrammat — a writer of hierograms.
- hierophantic — (in ancient Greece) an official expounder of rites of worship and sacrifice.
- high treason — treason against the sovereign or state.
- high voltage — high-power electricity
- high-ability — (of a student) having a higher than average ability
- high-hatting — to snub or treat condescendingly.