15-letter words containing y, e, i, s
- holiday clothes — the clothes worn and bought for travelling on holiday, such as swimwear, skiwear, or clothes for hot or cold weather, etc
- holocrystalline — (of igneous rocks) having only crystalline components and no glass
- holyhead island — former name of Holy Island (def 2).
- homeostatically — the tendency of a system, especially the physiological system of higher animals, to maintain internal stability, owing to the coordinated response of its parts to any situation or stimulus that would tend to disturb its normal condition or function.
- honeymoon suite — a luxurious suite in a hotel designed for honeymooners
- horse artillery — cavalry equipped with artillery
- house physician — a house officer working in a medical as opposed to a surgical discipline
- hydraulic press — a machine permitting a small force applied to a small piston to produce, through fluid pressure, a large force on a large piston.
- hyperactiveness — The state or quality of being hyperactive.
- hyperadrenalism — a glandular disorder caused by the overactivity of the adrenal glands and often resulting in obesity
- hyperaggressive — characterized by or tending toward unprovoked offensives, attacks, invasions, or the like; militantly forward or menacing: aggressive acts against a neighboring country.
- hyperanakinesia — abnormally active mechanical movement, especially of the stomach or intestine.
- hyperbolic sine — one of a group of functions of an angle expressed as a relationship between the distances of a point on a hyperbola to the origin and to the coordinate axes; sinh
- hypercatabolism — an abnormally high metabolic breakdown of a substance or tissue which leads to weight loss and physical deterioration
- hyperextensible — Capable of being stretched and extended.
- hyperfastidious — extremely or excessively fastidious
- hypergalactosis — an abnormally large secretion of milk.
- hyperinsulinism — excessive insulin in the blood, resulting in hypoglycemia.
- hypermetabolism — Biology, Physiology. the sum of the physical and chemical processes in an organism by which its material substance is produced, maintained, and destroyed, and by which energy is made available. Compare anabolism, catabolism.
- hyperovarianism — precocious sexuality in girls due to abnormally heavy ovarian secretion.
- hyperparasitism — an organism that is parasitic on or in another parasite.
- hyperpotassemia — hyperkalemia.
- hyperresponsive — responding especially readily and sympathetically to appeals, efforts, influences, etc.: a responsive government.
- hypersalivation — the act or process of salivating.
- hypersensitized — Simple past tense and past participle of hypersensitize.
- hypersexualised — Simple past tense and past participle of hypersexualise.
- hypersexualized — Simple past tense and past participle of hypersexualize.
- hyperthyroidism — overactivity of the thyroid gland.
- hypochondriases — Plural form of hypochondriasis.
- hypocrystalline — (of igneous rocks) having both glass and crystalline components
- hypoinsulinemia — (medicine) An abnormally low level of insulin in the blood.
- hypoinsulinemic — Having hypoinsulinemia.
- hypomagnesaemia — the condition of having too little magnesium in the blood, particularly in cattle, in which it is also known as lactation tetany
- hyposensitivity — low or diminished sensitivity to stimulation.
- hysteresis loop — a closed curve showing the variation of the magnetic flux density of a ferromagnetic material with the external magnetic field producing it, when this field is changed through a complete cycle
- hysteresis loss — the loss of energy by conversion to heat in a system exhibiting hysteresis.
- identity crisis — a period or episode of psychological distress, often occurring in adolescence but sometimes in adulthood, when a person seeks a clearer sense of self and an acceptable role in society.
- identity papers — law: legal documents
- ignition system — the system in an internal-combustion engine that produces the spark to ignite the mixture of fuel and air: includes the battery, ignition coil, distributor, spark plugs, and associated switches and wiring.
- immeasurability — Immeasurableness.
- immensurability — The quality of being immensurable.
- immunoassayable — Suitable for immunoassay.
- immunochemistry — the study of the chemistry of immunologic substances and reactions.
- imperial system — a system of measurement units, including the foot, pound, and second, as well as miles and yards
- imperishability — not subject to decay; indestructible; enduring.
- imprescriptibly — In an imprescriptible manner; obviously.
- in its entirety — completely, wholly
- in the old days — a long time ago
- in the same way — similarly
- in your dreams! — You say `In your dreams!' when you think that what someone wants is never going to happen or be true.