13-letter words containing n, o, s, t, a
- gynaecomastia — abnormal overdevelopment of the breasts in a man
- gyromagnetism — the condition or state of being gyromagnetic
- haematogenous — producing blood
- hampton roads — a channel in SE Virginia between the mouth of the James River and Chesapeake Bay: battle between the Monitor and the Virginia 1862.
- hand controls — a set of controls in some cars, operated by hand, that have the same function as the accelerator, brake, and clutch pedals
- harmonisation — (British spelling) alternative spelling of harmonization.
- hart's-tongue — a fern, Phyllitis scolopendrium, having long, leathery, wavy-edged leaves.
- haruspication — the use of animal entrails for divination
- hash function — (programming) A hash coding function which assigns a data item distinguished by some "key" into one of a number of possible "hash buckets" in a hash table. The hash function is usually combined with another more precise function. For example a program might take a string of letters and put it in one of twenty six lists depending on its first letter. Ideally, a hash function should distribute items evenly between the buckets to reduce the number of hash collisions. If, for example, the strings were names beginning with "Mr.", "Miss" or "Mrs." then taking the first letter would be a very poor hash function because all names would hash the same.
- heart surgeon — a surgeon who specializes in performing operations on the heart
- heartstopping — Very exciting or shocking, as though to cause one's heart to skip beats.
- hematogenesis — hematopoiesis.
- hematosalpinx — (medicine) A medical condition involving bleeding into the Fallopian tubes.
- 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.
- heterostracan — any of several ostracoderms of the order Heterostraci, from the Silurian and Devonian Periods, having the anterior part of the body enclosed in bony plates.
- histogramming — (mathematics) The construction of histograms.
- honey stomach — the crop of an ant, bee, or other hymenopterous insect, serving as a reservoir for honeydew and nectar, especially the enlarged crop of a honeybee in which nectar is acted on by enzymes to form honey.
- 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-trading — to bargain or trade shrewdly.
- hospitalizing — Present participle of hospitalize.
- host an event — If a hotel or organization hosts an event, it provides the facilities for the event to take place.
- hotheadedness — The state or characteristic of being hotheaded; the tendency to be easily infuriated or provoked.
- house painter — a person whose occupation is painting houses.
- house-trained — housebroken.
- housepainters — Plural form of housepainter.
- housetraining — Present participle of housetrain.
- housing start — an instance of beginning the construction of a dwelling.
- hudson strait — a strait connecting Hudson Bay and the Atlantic. 450 miles (725 km) long; 100 miles (160 km) wide.
- hunt saboteur — A hunt saboteur is someone who tries to stop a hunt from taking place or being successful because they believe it is cruel to the animal being hunted.
- hybridisation — Alternative form of hybridization.
- hymenopterans — Plural form of hymenopteran.
- hypostatizing — Present participle of hypostatize.
- hysteranthous — relating to a plant whose flowers open before its leaves
- ichthyopsidan — a member of the class Ichthyopsida
- idealizations — Plural form of idealization.
- idiomaticness — Idiomaticity.
- idiosyncratic — pertaining to the nature of idiosyncrasy, or something peculiar to an individual: The best minds are idiosyncratic and unpredictable as they follow the course of scientific discovery.
- illuminations — Plural form of illumination.
- illustrations — Plural form of illustration.
- immunisations — Plural form of immunisation.
- immunizations — Plural form of immunization.
- impersonality — absence of human character or of the traits associated with the human character: He feared the impersonality of a mechanized world.
- impersonating — to assume the character or appearance of; pretend to be: He was arrested for impersonating a police officer.
- impersonation — to assume the character or appearance of; pretend to be: He was arrested for impersonating a police officer.
- impersonators — Plural form of impersonator.
- implantations — Plural form of implantation.
- impostumation — an abscess or swelling filled with pus