13-letter words containing o, r, i, y, a
- gravity clock — a clock driven by its own weight as it descends a rack, cord, incline, etc.
- great society — the goal of the Democratic Party under the leadership of President Lyndon B. Johnson, chiefly to enact domestic programs to improve education, provide medical care for the aged, and eliminate poverty.
- group annuity — a plan in which the members of a group, usually employees of the same company, receive annuities upon retirement.
- grylloblattid — a primitive insect of the order Grylloblattidea, having a soft, unpigmented wingless body with long antennae and no eyes, living under stones in moderately high mountains of the western U.S., Japan, and the U.S.S.R.
- gynecocracies — Plural form of gynecocracy.
- gyromagnetism — the condition or state of being gyromagnetic
- haemodialyzer — a piece of equipment used in haemodialysis to screen the blood to remove unwanted substances
- hallucinatory — pertaining to or characterized by hallucination: hallucinatory visions.
- happy warrior — a person who is undiscouraged by difficulties or opposition.
- hemp agrimony — a European composite plant, Eupatorium cannabinum, having dull purplish flowers.
- hepatobiliary — Of, pertaining to, or originating in the liver, bile ducts and gallbladder.
- heresiography — a treatise on heresy.
- herniorrhaphy — correction of a hernia by a suturing procedure.
- hippo zarytus — ancient name of Bizerte.
- holiday-maker — vacationer.
- holidaymakers — Plural form of holidaymaker.
- honorifically — In a honorific manner.
- honourability — A state or condition or being honourable.
- horizontality — at right angles to the vertical; parallel to level ground.
- horologically — of or relating to horology.
- hyaluronidase — Biochemistry. a mucolytic enzyme found in the testes, in snake venom, and in hemolytic streptococci and certain other bacteria, that decreases the viscosity of the intercellular matrix by breaking down hyaluronic acid.
- hybridisation — Alternative form of hybridization.
- hybridization — to cause to produce hybrids; cross.
- hydrarthrosis — a build-up of fluid or water in the cavity of a joint, esp the knee joint
- hydroaerobics — aerobic exercises performed in water, as in a swimming pool.
- hydroairplane — a hydroplane.
- hydroboration — (chemistry) the production or organoboranes by the addition of diborane to unsaturated organic compounds.
- hydrocephalic — of or relating to hydrocephalus.
- hydrocracking — the cracking of petroleum or the like in the presence of hydrogen.
- hydrodynamics — the branch of fluid dynamics that deals with liquids, including hydrostatics and hydrokinetics.
- hydrofracking — a process in which fractures in rocks below the earth's surface are opened and widened by injecting chemicals and liquids at high pressure: used especially to extract natural gas or oil.
- hydrogenating — Present participle of hydrogenate.
- hydrogenation — to combine or treat with hydrogen, especially to add hydrogen to the molecule of (an unsaturated organic compound).
- hydropathical — Alternative form of hydropathic.
- hydrostatical — Alternative form of hydrostatic.
- hydroxylamine — an unstable, weakly basic, crystalline compound, NH 3 O, used as a reducing agent, analytical reagent, and chemical intermediate.
- hydroxylation — (organic chemistry) The introduction of a hydroxyl group into a molecule, especially by the replacement of a hydrogen atom.
- hygrometrical — Alternative form of hygrometric.
- hyperadenosis — abnormal enlargement of the glands, especially of the lymph nodes.
- hyperboloidal — Having the shape or form of a hyperboloid.
- hypercautious — Especially or unreasonably cautious.
- hypercyanotic — blueness or lividness of the skin, as from imperfectly oxygenated blood.
- hypermetropia — a condition of the eye in which parallel rays are focused behind the retina, distant objects being seen more distinctly than near ones; farsightedness (opposed to myopia).
- hypermorality — conformity to the rules of right conduct; moral or virtuous conduct.
- hypermutation — (uncountable) Frequent mutation.
- hyperpolarize — to increase the difference in electric potential across (a cell membrane).
- hyperprosexia — a condition in which the whole attention is occupied by one object or idea to the exclusion of others
- hyperrational — characterized by excessive rationality
- hyperromantic — extremely or excessively romantic
- hypersarcosis — a fleshy outgrowth