10-letter words containing o, a, s, t
- haematosis — Alternative form of hematosis.
- hagerstown — a city in NW Maryland.
- hailstones — Plural form of hailstone.
- hailstorms — Plural form of hailstorm.
- half story — a usable living space within a sloping roof, usually having dormer windows for lighting.
- halloysite — a refractory clay mineral similar in composition to kaolinite.
- halobionts — Plural form of halobiont.
- halophytes — Plural form of halophyte.
- hammertoes — Plural form of hammertoe.
- handsomest — having an attractive, well-proportioned, and imposing appearance suggestive of health and strength; good-looking: a handsome man; a handsome woman.
- handstroke — the downward movement of the bell rope as the bell swings around allowing the ringer to grasp and pull it
- haplotypes — Plural form of haplotype.
- harmonists — Plural form of harmonist.
- harmsworth — Alfred Charles William, Viscount Northcliffe, 1865–1922, English journalist, publisher, and politician.
- haustorium — a projection from the hypha of a fungus into the organic matter from which it absorbs nutrients.
- headstocks — Plural form of headstock.
- headstones — Plural form of headstone.
- headstrong — determined to have one's own way; willful; stubborn; obstinate: a headstrong young man.
- healthsome — healthy; salubrious
- heartworms — Plural form of heartworm.
- heatstroke — a disturbance of the temperature-regulating mechanisms of the body caused by overexposure to excessive heat, resulting in fever, hot and dry skin, and rapid pulse, sometimes progressing to delirium and coma.
- hectograms — Plural form of hectogram.
- heliostats — Plural form of heliostat.
- heliotaxis — movement of an organism toward or away from sunlight.
- hematocyst — a cyst containing blood.
- hemostasis — the stoppage of bleeding.
- hemostatic — arresting hemorrhage, as a drug; styptic.
- hereabouts — about this place; in this neighborhood.
- hesitation — the act of hesitating; a delay due to uncertainty of mind or fear: His hesitation cost him the championship.
- hesitatory — Hesitating.
- hippotamus — Obsolete spelling and common present-day misspelling of hippopotamus.
- histoblast — a cell or group of cells capable of forming tissue.
- histograms — Plural form of histogram.
- historians — Plural form of historian.
- historical — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.
- hofstadter — Richard, 1916–70, U.S. historian.
- holocausts — Plural form of holocaust.
- home stand — a series of consecutive sports events, as baseball games, played in a team's own stadium.
- home state — the state where a person comes from, or where they live
- homesteads — Plural form of homestead.
- homoblasty — the state of being homoblastic
- homografts — Plural form of homograft.
- horsetails — Plural form of horsetail.
- hortensial — (obsolete) Fit for a garden.
- hospitable — receiving or treating guests or strangers warmly and generously: a hospitable family.
- hospitably — receiving or treating guests or strangers warmly and generously: a hospitable family.
- hospitaler — a member of the religious and military order (Knights Hospitalers or Knights of St. John of Jerusalem) originating about the time of the first Crusade (1096–99) and taking its name from a hospital at Jerusalem.
- hospitalet — a city in NE Spain, near Barcelona.
- housatonic — a river flowing S from NW Massachusetts through SW Connecticut to Long Island Sound near Stratford, Connecticut. 148 miles (240 km) long.
- house seat — one of a number of seats in a theater that the management reserves for special guests, friends of the producer or cast, etc.