9-letter words containing d, o, r, y
- hydrofoil — Naval Architecture. a surface form creating a thrust against water in a direction perpendicular to the plane approximated by the surface.
- hydrogels — Plural form of hydrogel.
- hydrogens — Plural form of hydrogen.
- hydrolant — an urgent warning of navigational dangers in the Atlantic Ocean, issued by the U.S. Navy Hydrographic Office.
- hydrolase — an enzyme that catalyzes hydrolysis.
- hydrolize — (intransitive) To undergo hydrolization.
- hydrology — the science dealing with the occurrence, circulation, distribution, and properties of the waters of the earth and its atmosphere.
- hydrolyse — Alternative spelling of hydrolyze.
- hydrolyte — a substance subjected to hydrolysis.
- hydrolyze — Break down (a compound) by chemical reaction with water.
- hydronaut — a person trained to work in deep-sea vessels for research and rescue purposes.
- hydronium — (inorganic chemistry) the hydrated hydrogen ion, H3O+.
- hydroptic — (formerly) edema.
- hydropult — a type of water pump or machine that expels water by means of hand power, as, for example, a fire extinguisher
- hydroseed — to sow (a field, lawn, etc.) with seed by distribution in a stream of water propelled through a hose.
- hydrosere — a sere originating in water.
- hydrosols — Plural form of hydrosol.
- hydrosoma — hydrosome.
- hydrosome — the entire body of a compound hydrozoan.
- hydrostat — an electrical device for detecting the presence of water, as from overflow or leakage.
- hydrovane — a vane on a seaplane conferring stability on water (a sponson) or facilitating take off (a hydrofoil)
- hydroxide — a chemical compound containing the hydroxyl group.
- hydrozoan — any freshwater or marine coelenterate of the class Hydrozoa, including free-swimming or attached types, as the hydra, in which one developmental stage, either the polyp or medusa, is absent, and colonial types, as the Portuguese man-of-war, in which both medusa and polyp stages are present in a single colony.
- hydrozoon — (zoology) One of the Hydrozoa.
- hygrodeik — A form of hygrometer having wet and dry bulb thermometers, with an adjustable index showing the percentage of moisture in the air, etc.
- hypoderma — hypodermis.
- hysteroid — resembling hysteria.
- idiocracy — Government that is based upon abstract theory.
- idiocrasy — idiosyncrasy.
- idiolatry — Autolatry, or self worship.
- idolatory — Misspelling of idolatry.
- iodimetry — iodometry.
- iodometry — a volumetric analytical procedure for determining iodine or materials that will liberate iodine or react with iodine.
- iridocyte — a guanine-containing cell in the skin of fish and some cephalopods, giving these animals their iridescence
- iridology — the inspection of the iris of the eye as an aid in determining a person's state of health or in diagnosing a health problem.
- iridotomy — incision of the iris, especially for the formation of an artificial pupil by transverse division of fibers of the iris.
- isohydric — having the same acidity or hydrogen-ion concentration
- ivorywood — the yellowish-white wood of an Australian tree, Siphonodon australe, used for engraving, inlaying, and turnery
- john dory — any fish of the family Zeidae, especially Zeus faber, of European seas, having a vertically compressed body and long spines in the dorsal fin.
- journeyed — a traveling from one place to another, usually taking a rather long time; trip: a six-day journey across the desert.
- joy-rider — a pleasure ride in an automobile, especially when the vehicle is driven recklessly or used without the owner's permission.
- joyridden — Past participle of joyride.
- joyriders — Plural form of joyrider.
- joyriding — The action or practice of driving fast and dangerously in a stolen car for enjoyment.
- keyboards — Plural form of keyboard.
- kzyl-orda — a city in S Kazakhstan, on the Syr Darya.
- labor day — (in the U.S.) a legal holiday, commonly the first Monday in September, in honor of labor.
- laudatory — containing or expressing praise: overwhelmed by the speaker's laudatory remarks.
- lord lyon — the chief herald of Scotland
- mandatory — authoritatively ordered; obligatory; compulsory: It is mandatory that all students take two years of math.