Skip to content A B C D E F G H I J K L M N O P Q R S T U V W X Y Z hydropillar A water tower taking the form of a single high pillar, rather than an exterior truss structure. hydropiper Water pepper; a knotweed of species Persicaria hydropiper (formerly Polygonum hydropiper). hydroplane To skim the surface of a body of water while moving at high speed. hydroplaning The loss of contact with the road because of surface water; the act of aquaplaning. hydroplasma The liquid part of protoplasm hydroplasmic Relating to hydroplasma hydroplastic That softens and becomes mouldable on contact with (hot) water hydroplethysmometer A plethysmometer that employs water hydropneumatic Operated by both fluid and air power hydropneumatically Operated by both fluid and air power. hydropneumatics hydropneumatic technology in general hydropneumonia edema of the lungs hydropneumothorax The presence of both fluid and air in the pleural cavity hydropolitical Relating to hydropolitics. hydropolitics The politics of water resources. hydropollution water pollution hydropolymer A wound dressing that absorbs blood and pus hydropolyp The polyp of a hydrozoan hydropolysulfide Any compound of general formula RSₙH (where n is greater than 2) having a chain of sulfur atoms. hydroponic Of a plant; pertaining to or grown using hydroponics, a method of growing plants using mineral nutrient solutions in water, without soil. hydroponically using hydroponics hydroponicist A person who cultivates plants using hydroponics. hydroponics The cultivation of plants in a nutrient solution rather than in the soil. hydroponist A person who cultivates plants using hydroponics. hydroporated Modified by hydroporation hydroporation The creation of pores in biological membranes by the pressure of water hydropore A pore on the outside of a starfish connecting to the hydrovascular organ. hydropositive Attracted to water. hydropot A person who drinks water etc. rather than alcoholic drinks. hydropotential The potential for generation of hydroelectric power. hydropotist Synonym of hydropot. hydropower hydroelectric power hydropowered powered by water hydroprene The ethyl ester of an isoprene carboxylic acid ethyl (2E,4E)-3,7,11-trimethyl-2,4-dodecadienoate; it has insecticidal properties hydropress A hydraulic press (especially one that employs mains water) hydropriming The soaking of seed in water prior to sowing. hydroprocess To process using hydroprocessing hydroprocessed Pertaining to hydroprocessing hydroprocessing Any of several chemical engineering processes including hydrogenation, hydrocracking and hydrotreating, especially as part of oil refining. hydroprocessor A machine or industrial plant that performs hydroprocessing. hydrops The abnormal accumulation of serous fluid in a tissue or cavity. hydropsy Edema, dropsy. hydropsychid Any caddisfly in the family Hydropsychidae. hydroptilid Any caddis fly in the family Hydroptilidae. hydropult A hand-powered machine for spraying water, somewhat similar to a fire extinguisher. hydropump A hydraulic pump. hydropyrolysate The product of hydrous pyrolysis hydropyrolysis Hydrogen pyrolysis: the thermal decomposition which takes place when organic compounds are heated to high temperatures in the presence of hydrogen. In some case, water may be used as the hydrogen source. hydropyrrolation Any addition reaction in which a hydrogen atom and a pyrrole group are attached across a double bond or triple bond. hydroquinidine The alkaloid (9S)-10,11-dihydro-6′-methoxycinchonan-9-ol derived from quinidine hydroquinone The diphenol para-dihydroxy benzene, used as a mild reducing agent in photographic developing; isomeric with catechol and resorcinol. hydroreceptor An organ that detects water. hydroreduction hydrostatic reduction of intussusception hydroregulation The regulation of the water content of the body hydroresorufin A reduced, colourless form of resorufin hydrorhiza The rootstock or decumbent stem by which a hydroid is attached to other objects hydrorhizal Relating to a hydrorhiza hydroriparian Relating to a hydric riparian zone. hydroromarchite A tetragonal-ditetragonal dipyramidal white mineral containing hydrogen, oxygen, and tin. hydrorubber Any of a class of substances produced by hydrogenation of rubber. hydros transliteration of Greek ὕδρος, "water snake" hydrosaline Pertaining to water containing dissolved mineral salts hydrosalpingeal Relating to the hydrosalpinges hydrosalpinx A distally blocked Fallopian tube filled with serous or clear fluid. hydrosalt A salt supposed to be formed by a hydracid and a base. hydrosanitary Describing any sanitary apparatus that employs water. hydroscaphid Any beetle in the family Hydroscaphidae. hydroscarbroite A triclinic white mineral containing aluminum, carbon, hydrogen, and oxygen. hydroschizophrenia The mismanagement of water resources, particularly due to the failure to integrate surface water and groundwater governance. hydroscience The science and associated technology of water management hydroscientist One who studies hydroscience. hydroscope A device for viewing objects below the surface of the water. hydroscopist dowser, water diviner hydrosecurity Security and control of water resources, especially in geopolitical contexts. hydrosedimentary Relating to water and to sedimentation hydroseed The mixture of seeds, water, fertilizer, etc. used in hydroseeding. hydroseeded Seeded by hydroseeding. hydroseeder A machine that carries out hydroseeding. hydroseeding A method of seeding (used especially with grass) that uses a slurry of seed in water hydroselenide Any compound formally derived from hydrogen selenide by replacing one hydrogen atom with a metal or other radical hydrosensitive sensitive to water hydroseral Relating to a hydrosere. hydrosere A plant succession in which an open freshwater naturally dries out, gradually becoming swamp, marsh, etc. and ultimately woodland. hydroshear To produce nucleic acid fragments by hydroshearing hydroshearing hydraulic shearing; a method of producing random nucleic acid fragments hydrosilane Any of a class of compounds in which one or more hydrogen atoms of a silane are replaced by alkyl groups hydrosilation hydrosilylation hydrosilicate A hydrated silicate, especially one that loses its water content on heating hydrosiloxane A siloxane formed by reaction of a silanol and a hydrosilane hydrosilylation The addition reaction of a silane with an organic compound. hydrosimulation hydrodynamic simulation hydroskeletal Of or relating to a hydroskeleton. hydroskeleton A hydrostatic skeleton; a structure found in many cold-blooded organisms and soft-bodied animals, consisting of a fluid-filled cavity, the coelom, surrounded by muscles, and used in movement and changing shape. hydroski A ski allowing a seaplane to land on water. hydroskimmer An amphibious hovercraft. hydroskimming Describing an oil refinery that has simple reforming and desulfurization facilities hydroslide Water slide hydrosoil A soil enhanced with a hydroponic solution hydrosol A sol (solid-in-liquid colloid) in which the continuous phase (dispersing medium) is water. hydrosolic Relating to a hydrosol. hydrosolubility solubility in water hydrosoluble Soluble in water. hydrosoma The entire organism of any hydrozoon. hydrosomal Relating to the hydrosoma. hydrosome A colony of hydrozoans considered as a single organism hydrosonographic Relating to hydrosonography. hydrosonography An ultrasound involving the injection of a fluid into the endometrial cavity. hydrospace That part of the Earth, or other planet, that lies below the surface of its lakes, seas and oceans, hydrospatial Relating to hydrospace hydrospeed riverboarding hydrospeeding riverboarding hydrosphere All the liquid waters of the Earth or another astronomical body, as distinguished from the land and the gases of the atmosphere. hydrospheric Relating to the hydrosphere. hydrospire A flattened calcareous tube on each side of the midline of the inner part of the ambulacra of a blastoid hydrosprigging The use of sprigs or cut stolons and rhizomes in a slurry of fertilizer, mulch, and binding agent, sprayed with a hose over a target area instead of planting. hydrospring A mechanical device that performs a similar function to a spring, using hydraulic fluid to provide superior damping. hydrostable stable in the presence of water hydrostannane Any organotin compound containing a residual Sn-H bond hydrostannation Any hydrometallation reaction involving a tin hydride hydrostannylation Insertion of unsaturated substrates into Sn-H bond using tin hydride compound. hydrostasis hydrostatic equilibrium hydrostat A mechanism that regulates the amount of water in a boiler. hydrostatic Of or relating to hydrostatics. hydrostatically In a hydrostatic manner hydrostatician Someone versed or skilled in hydrostatics. hydrostaticity The condition of being hydrostatic. hydrostatics The scientific study of fluids at rest, especially when under pressure. hydrostation A water-powered electricity-generating station. hydrostationary Of or pertaining to hydrostatics; hydrostatic. hydrostratigraphic Of or pertaining to the arrangement of hydrostratigraphy hydrostratigraphy Structure of subsurface porous materials in reference to the flow of groundwater, often relating to stratigraphy hydrosulfate Any sulfate of an organic base hydrosulfide Any compound formally derived from hydrogen sulfide by replacing one hydrogen atom with a metal or other radical; a thiol or mercaptan. hydrosulfite dithionite hydrosulfuric Derived from hydrogen sulfide considered as hydrosulfuric acid. hydrosulfurous hyposulfurous hydrosulphosol Synonym of calsulfhydryl. hydrosulphuret Any hydrosulfide. hydrosulphuretted combined with hydrogen sulfide hydrosurgery A form of surgery in which small jets of water are employed to debride damaged tissue hydrosuture A suture within the aqueous humour of the eye hydrosutured sutured by means of hydrosutures hydrosystem A hydrological system (system of water management) hydrotachymeter An instrument used to measure the velocity of water (in a river etc). hydrotactic Relating to hydrotaxis hydrotalcite A trigonal-hexagonal scalenohedral mineral containing aluminum, carbon, hydrogen, magnesium, and oxygen. hydrotank A tank in which the patient is immersed in hydrotherapy. hydrotaxis movement (of an organism or organ) in response to water hydrotechnical Relating to hydrotechnology hydrotechnologist One who studies hydrotechnology.