15-letter words containing n, a, i, l
- hair transplant — the surgical transfer of clumps of skin with hair or of viable hair follicles from one site of the body to another, usually performed to correct baldness.
- half wellington — a loose boot extending to just above the ankle and usually worn under the trousers.
- half-round file — a file having a semicircular cross-section
- halting problem — The problem of determining in advance whether a particular program or algorithm will terminate or run forever. The halting problem is the canonical example of a provably unsolvable problem. Obviously any attempt to answer the question by actually executing the algorithm or simulating each step of its execution will only give an answer if the algorithm under consideration does terminate, otherwise the algorithm attempting to answer the question will itself run forever. Some special cases of the halting problem are partially solvable given sufficient resources. For example, if it is possible to record the complete state of the execution of the algorithm at each step and the current state is ever identical to some previous state then the algorithm is in a loop. This might require an arbitrary amount of storage however. Alternatively, if there are at most N possible different states then the algorithm can run for at most N steps without looping. A program analysis called termination analysis attempts to answer this question for limited kinds of input algorithm.
- hamiltonstovare — a large strong short-haired breed of hound with a black, brown, and white coat
- hanging glacier — a glacier situated on a shelf above a valley or another glacier; it may be joined to the lower level by an icefall or separate from it
- hardy perennial — a plant that lasts three seasons or more and that can withstand freezing temperatures
- harlequin snake — the E American coral snake (Micrurus fulvius)
- harlequin table — a writing or dressing table having a central set of compartments that rise when drop leaves are raised.
- harun al-rashid — a.d. 764?–809, caliph of Baghdad 786–809: one of the greatest Abbasids, he was made almost a legendary hero in the Arabian Nights.
- haversian canal — a microscopic channel in bone, through which a blood vessel runs.
- hazard analysis — risk assessment
- health benefits — positive effects on health
- health minister — a government minister who is responsible for health
- heartbreakingly — causing intense anguish or sorrow.
- heating element — a coil or other arrangement of wire in which heat is produced by an electric current
- heliacal rising — rising of a celestial object at approximately the same time as the rising of the sun
- hemodynamically — With regard to hemodynamics.
- hendecasyllabic — having 11 syllables.
- herbal medicine — the use of herbs to treat illness
- hermeneutically — of or relating to hermeneutics; interpretative; explanatory.
- high-angle shot — a shot taken from a camera positioned above the action
- highland cattle — a breed of cattle with shaggy hair, usually reddish-brown in colour, and long horns
- hip replacement — a surgical procedure involving replacing the hip joint with an artificial implant
- holding company — a company that controls other companies through stock ownership but that usually does not engage directly in their productive operations (distinguished from parent company).
- holding furnace — a small furnace for holding molten metal produced in a larger melting furnace at a desired temperature for casting.
- holding paddock — a paddock in which cattle or sheep are kept temporarily, as before shearing, etc
- holding pattern — a traffic pattern for aircraft at a specified location (holding point) where they are ordered to remain until permitted to land or proceed.
- holiday feeling — the positive feeling people experience while on holiday and during holiday periods such as the Christmas period
- holocrystalline — (of igneous rocks) having only crystalline components and no glass
- holyhead island — former name of Holy Island (def 2).
- horizontal well — A horizontal well is a well which has sections that have been drilled at more than 80 degrees from the vertical in order to penetrate a greater length of the reservoir.
- hospital corner — a fold on a bed sheet or blanket made by tucking the foot or head of the sheet straight under the mattress with the ends protruding and then making a diagonal fold at the side corner of the sheet and tucking this under to produce a triangular corner.
- hospitalisation — (British) alternative spelling of hospitalization.
- hospitalization — the act, process, or state of being hospitalized.
- hot-air balloon — passenger balloon
- human relations — the study of group behavior for the purpose of improving interpersonal relationships, as among employees.
- hung parliament — a parliament that does not have a party with a working majority
- hunting leopard — the cheetah.
- hurdle champion — a hurdler who has defeated all others in a competition
- hyaluronic acid — a mucopolysaccharide serving as a viscous medium in the tissues of the body and as a lubricant in joints.
- hydromechanical — Of or pertaining to hydromechanics.
- hyper-emotional — pertaining to or involving emotion or the emotions.
- hyperadrenalism — a glandular disorder caused by the overactivity of the adrenal glands and often resulting in obesity
- hypercalcinuria — Condition of high levels of calcium in the urine as caused by high levels of bone resorption seen in osteoporosis or hyperthyroidism.
- hyperfunctional — of or relating to a function or functions: functional difficulties in the administration.
- hyperpolarizing — Present participle of hyperpolarize.
- hypersalivation — the act or process of salivating.
- hyperventilated — Simple past tense and past participle of hyperventilate.
- hypnotisability — Alternative spelling of hypnotizability.