hydroalcoholicDescribing a solution in which the solvent is a mixture of water and alcohol
hydroalkenylationAny addition reaction in which a hydrogen atom and an alkenyl group are attached across a double bond or triple bond
hydroalkoxylationThe addition reaction of an alcohol to a double bond in which a hydrogen atom is attached to one side and an alkoxy group to the other
hydroalkylationA combination of hydrogenation and alkylation
hydroaluminationAny addition reaction in which atoms of hydrogen and aluminium are added across a double bond or triple bond
hydroamidationThe addition reaction of (the N-H group of) an amide across a double bond
hydroaminationThe addition reaction of an amine across a double bond
hydroandraditeA hydroxyl-bearing variety of the mineral andradite.
hydroastrophylliteA triclinic-pinacoidal dark brown mineral containing aluminum, calcium, fluorine, hydrogen, iron, manganese, niobium, oxygen, potassium, silicon, and titanium.
hydrobiosidAny caddis fly in the family Hydrobiosidae.
hydrobiotiteA monoclinic-prismatic mineral containing aluminum, calcium, fluorine, hydrogen, iron, magnesium, oxygen, potassium, and silicon.
hydrobiousAdapted to living or dwelling in water, or in the vicinity of water; dependent upon a water environment for survival; aquatic.
hydrobiplaneA hydroaeroplane having two supporting planes.
hydrobladingA figure-skating move in which a skater glides on a deep edge with the body stretched in a very low position, almost horizontal to the ice.
hydrobromideA compound of hydrobromic acid with an organic base (distinguished from a bromide, in which only the bromine unites with the base).
hydrobrominationReaction with hydrogen bromide (HBr) or hydrobromic acid, HBr(aq).
hydrobromofluorocarbonAny halocarbon which contains hydrogen, bromine and fluorine; they are used as refrigerants, and have ODP (“ozone depleting potential”).
hydrocalumiteA monoclinic-sphenoidal mineral containing aluminum, calcium, chlorine, hydrogen, and oxygen.
hydrocalycosisA rare kidney condition in which one or more renal calyces become abnormally dilated or swollen, often due to obstruction of their narrow neck, resulting in fluid buildup.
hydrocarbonylA mixed hydride and carbonyl of a metal
hydrocarbonylationThe addition of carbon monoxide and hydrogen to unsaturated hydrocarbons.
hydrocarbostyrilA nitrogenous hydrocarbon, C₉H₉NO, obtained from certain derivatives of cinnamic acid and closely related to quinoline and carbostyril.
hydrocarboxylationThe addition reaction of carbon monoxide and either water or an alcohol to the double bond of an olefin to produce a carboxylic acid or ester respectively
hydrocarboxylicDescribing a carboxylic acid that has at least one hydroxyl group
hydrocarbylAny univalent radical, derived from a hydrocarbon, such as methyl or phenyl.
hydrocarbyleneany divalent radical formed by removing two hydrogen atoms from a hydrocarbon
hydrocarbylideneany divalent radical formed by removing two hydrogen atoms from the same carbon atom of a hydrocarbon, and the free valencies of which form a double bond - R₂C=
hydrocarbylidyneany divalent radical formed by removing three hydrogen atoms from the same carbon atom of a hydrocarbon, and the free valencies of which form a triple bond
hydrocastA form of scientific water measurement in which several connected bottles are lowered into the water to collect samples.
hydrocephalusA usually congenital condition in which an abnormal accumulation of fluid in the cerebral ventricles causes enlargement of the skull and compression of the brain, destroying much of the neural tissue.
hydrochlorideA compound of hydrochloric acid with an organic base such as an amine.
hydrochlorinateTo react or treat with hydrogen chloride or hydrochloric acid.
hydrochlorinationReaction with hydrogen chloride (HCl) or hydrochloric acid, HCl(aq).
hydrochlorofluorocarbonA man-made chemical compound containing hydrogen, chlorine, fluorine, and carbon, mainly used in refrigeration, air conditioning, foam manufacturing, and aerosols.
hydrochlorothiazideA diuretic drug, with the chemical formula C₇H₈ClN₃O₄S₂, that inhibits the kidneys' ability to retain water and lowers blood pressure.
hydrocloneAn industrial device that uses a conical vortex and centrifugal force to separate a solid-liquid mixture.
hydroclusterA theoretical cluster of suspension particles that cause shear thickening.
hydrocodeAny of several computer programs that model the behaviour of fluid flow systems by breaking down the system into a three-dimensional matrix of cells and calculating the forces etc. affecting each one
hydrocodoneA habit-forming compound that is derived from codeine and is administered in the form of its bitartrate C₁₈H₂₁NO₃·C₄H₆O₆ usually in combination with other drugs (as acetaminophen) as an analgesic or antitussive.
hydrocolloidAny material that forms a colloid (especially a gel) when mixed with water.
hydrocortisoneName used for cortisol, a glucocorticoid steroid hormone, when used as a medication. Used to treat e.g. inflammation resulting from rheumatism and eczema.