13-letter words containing a, t, h, e, i, s
- hecate strait — a strait in central British Columbia, Canada, between the mainland and the Queen Charlotte Islands. 160 miles (257 km) long and 40–80 miles (64–129 km) wide.
- helianthemums — Plural form of helianthemum.
- hellgrammites — Plural form of hellgrammite (Alternative spelling of hellgramites).
- helminthiasis — a disease caused by parasitic worms in the intestines.
- hematogenesis — hematopoiesis.
- hematologists — Plural form of hematologist.
- hematopoiesis — the formation of blood.
- hematosalpinx — (medicine) A medical condition involving bleeding into the Fallopian tubes.
- hemichordates — Plural form of hemichordate.
- hemiparasitic — Semiparasitic.
- hepatectomies — Plural form of hepatectomy.
- heptaselenide — (chemistry) any selenide containing seven selenium atoms in each molecule.
- heptasyllabic — having seven syllables
- hereditaments — Plural form of hereditament.
- hereditarians — Plural form of hereditarian.
- heritage site — a historical site, a building, or an area of the unspoilt natural environment, considered to be important to a country or area's heritage
- herod antipas — died after a.d. 39, ruler of Galilee, a.d. 4–39: ordered the execution of John the Baptist and participated in the trial of Jesus.
- heroic stanza — elegiac stanza.
- hessian boots — a knee-high tasseled boot, fashionable in England in the early 19th century.
- heteroblastic — (of a plant or plant part) showing a marked difference in form between the juvenile and the adult structures
- heteroglossia — (linguistics) the coexistence of distinct varieties within a single linguistic code.
- heteroplastic — the repair of lesions with tissue from another individual or species.
- heuristically — serving to indicate or point out; stimulating interest as a means of furthering investigation.
- hexadactylism — Sexdactyly.
- hiatus hernia — an abnormal condition in which part of the stomach protrudes upward through the esophageal cleft in the diaphragm, sometimes causing a backflow of acid stomach contents into the esophagus.
- hilbert space — a complete infinite-dimensional vector space on which an inner product is defined.
- histaminergic — releasing histamine
- histochemical — the branch of science dealing with the chemical components of cellular and subcellular tissue.
- home straight — the section of a racecourse forming the approach to the finish
- homoscedastic — having the same variance.
- homosexuality — sexual desire or behavior directed toward a person or persons of one's own sex.
- hoosier state — Indiana (used as a nickname).
- horse gentian — any weedy North American plant of the genus Triosteum, of the honeysuckle family, especially T. perfoliatum, having stalkless leaves and purplish-brown flowers and bearing orange fruits.
- horse trading — the act or fact of conducting a shrewd exchange or engaging in a horse trade; bargaining.
- horse trailer — lorry for transporting a horse
- horse-trading — to bargain or trade shrewdly.
- hospital care — medical treatment provided in a hospital
- hospital case — a patient that is being, or needs to be, treated in a hospital
- house painter — a person whose occupation is painting houses.
- house trailer — a trailer fitted with accommodations for sleeping, eating, washing, etc.
- house-trained — housebroken.
- housepainters — Plural form of housepainter.
- housetraining — Present participle of housetrain.
- hunter trials — a test for hunters held under the auspices of a hunt, in which the course is laid with obstacles to simulate actual hunting conditions.
- hypercautious — Especially or unreasonably cautious.
- hyperesthesia — an abnormally acute sense of pain, heat, cold, or touch; algesia.
- hyperparasite — an organism that is parasitic on or in another parasite.
- hypersalinity — an excess of salt in a saline solution
- hyposexuality — A significantly low level of sexuality.
- hypotheticals — Plural form of hypothetical.