<B>hydropathic, </B>adjective, noun.<DL COMPACT><DD><I>adj. </I> of or using hydropathy. <DD><I>noun </I> a sanitarium that specializes in hydropathy. </DL>
<A NAME="hydropathist">
<B>hydropathist, </B>noun.<DL COMPACT><DD> a person who practices or favors hydropathy. </DL>
<A NAME="hydropathy">
<B>hydropathy, </B>noun.<DL COMPACT><DD> the treatment of disease by using quantities of water externally and internally; water cure. </DL>
<A NAME="hydroperoxide">
<B>hydroperoxide, </B>noun.<DL COMPACT><DD> any one of a class of compounds containing the group OOH-. Hydrogen peroxide is the simplest hydroperoxide. </DL>
<A NAME="hydrophane">
<B>hydrophane, </B>noun.<DL COMPACT><DD> a partly translucent variety of opal which becomes more translucent when immersed in water. </DL>
<A NAME="hydrophanous">
<B>hydrophanous, </B>adjective.<DL COMPACT><DD> having to do with or like hydrophane; becoming transparent when immersed in water. </DL>
<A NAME="hydrophilic">
<B>hydrophilic, </B>adjective.<DL COMPACT><DD><B> 1. </B>that can readily absorb or dissolve in water, as a gelatin does. <DD><B> 2. </B><B>=hydrophilous.</B> </DL>
<A NAME="hydrophilous">
<B>hydrophilous, </B>adjective.<DL COMPACT><DD> pollinated by the action of water. <BR> <I>Ex. hydrophilous plants.</I> </DL>
<B>hydrophobic, </B>adjective.<DL COMPACT><DD><B> 1. </B>of or having to do with hydrophobia. <DD><B> 2. </B>suffering from hydrophobia. <DD><B> 3. </B>of or having to do with a substance that has little or no ability to combine with or dissolve in water, such as wax. </DL>
<A NAME="hydrophobicpocket">
<B>hydrophobic pocket,</B><DL COMPACT><DD> a water-repellant, pocketlike fold on the surface of a protein that repels water and affects the protein's shape. <BR> <I>Ex. One leading idea is that anaesthetics bind to proteins at sites called hydrophobic pockets (New York Times).</I> </DL>
<A NAME="hydrophone">
<B>hydrophone, </B>noun.<DL COMPACT><DD><B> 1. </B>an instrument used to detect sound under water and to determine its source and position. <DD><B> 2. </B>an instrument used to detect the flow of water through a pipe. It is used in finding leaks. <DD><B> 3. </B>(Medicine.) an instrument used in auscultation, whereby sounds are carried through a column of water. </DL>
<A NAME="hydrophyllaceous">
<B>hydrophyllaceous, </B>adjective.<DL COMPACT><DD> belonging to the waterleaf family of herbs and plants. </DL>
<A NAME="hydrophyte">
<B>hydrophyte, </B>noun.<DL COMPACT><DD> any plant that can grow only in water or very wet soil. Most algae are hydrophytes. </DL>
<A NAME="hydrophytic">
<B>hydrophytic, </B>adjective.<DL COMPACT><DD> of or like a hydrophyte. </DL>
<B>hydroplane, </B>noun, verb, <B>-planed,</B> <B>-planing.</B><DL COMPACT><DD><I>noun </I> <B>1. </B>a light, fast motorboat that glides on the surface of water. <BR> <I>Ex. A flat-bottomed inboard motorboat called a hydroplane has a light hull and a powerful motor designed especially for racing (William W. Robinson).</I> <DD><B> 2. </B>an airplane provided with floats or with a boatlike underpart that can land or take off on water; seaplane. <DD><B> 3. </B>a structure on an airplane that enables it to float on water. <DD><B> 4. </B>a horizontal rudder on a submarine that enables it to surface or submerge. <DD><I>v.i. </I> <B>1. </B>to glide on the surface of water. <DD><B> 2. </B>to use or ride in a hydroplane. <DD><B> 3. </B>(of a vehicle) to undergo hydroplaning. </DL>
<A NAME="hydroplaning">
<B>hydroplaning, </B>noun.<DL COMPACT><DD> the action of tires on a vehicle floating or sliding on wet pavement, caused by the build-up of water between the moving tires and the pavement to a point where the tires lose contact with the road. </DL>
<A NAME="hydropneumatic">
<B>hydropneumatic, </B>adjective.<DL COMPACT><DD> having to do with or produced by the action or use of both water and air or water and gas. </DL>
<A NAME="hydroponic">
<B>hydroponic, </B>adjective.<DL COMPACT><DD> of hydroponics; produced or grown by hydroponics. <BR> <I>Ex. Hydroponic farming ... is a potential source ofincreased crop yield (William C. Baggs).</I> adv. <B>hydroponically.</B> </DL>
<A NAME="hydroponics">
<B>hydroponics, </B>noun.<DL COMPACT><DD> the growing of plants without soil, by the use of water containing the necessary mineral nutrients; chemical culture; nutriculture. </DL>
<A NAME="hydroponist">
<B>hydroponist, </B>noun.<DL COMPACT><DD> a person skilled in hydroponics. </DL>
<A NAME="hydropower">
<B>hydropower, </B>noun.<DL COMPACT><DD> electricity generated by means of water power. </DL>
<A NAME="hydrops">
<B>hydrops, </B>noun. <B>=dropsy.</B></DL>
<A NAME="hydropsy">
<B>hydropsy, </B>noun. <B>=dropsy.</B></DL>
<A NAME="hydropsychotherapy">
<B>hydropsychotherapy, </B>noun.<DL COMPACT><DD> the treatment of mental or emotional disorders by techniques involving the use of baths or pools. </DL>
<B>hydroquinone, </B>noun.<DL COMPACT><DD> a white, sweetish, crystalline compound formed by the reduction of quinone, used in photographic developers and other chemical products, and in medicine. </DL>
<B>hydroscope, </B>noun.<DL COMPACT><DD><B> 1. </B>an optical apparatus that enables the observer to view objects below the surface of the sea. <DD><B> 2. </B>an ancient device that measured the lapse of time by the sinking of water in a graduated tube perforated at the bottom. </DL>
<A NAME="hydroscopic">
<B>hydroscopic, </B>adjective.<DL COMPACT><DD> having to do with or made with a hydroscope. </DL>
<A NAME="hydroski">
<B>hydroski, </B>noun, pl. <B>-skis</B> or <B>-ski.</B><DL COMPACT><DD> a retractable device on an airplane permitting it to take off and land on any smooth surface, as land, water, or snow. </DL>
<A NAME="hydroskimmer">
<B>hydroskimmer, </B>noun.<DL COMPACT><DD> a hovercraft for traveling over water, with a fin along each side that pierces the water's surface. <BR> <I>Ex. Using a "cushion of air," the hydroskimmer has no upper limit on the speed at which it can "fly" nor on the weight which it can carry (Science News Letter).</I> </DL>
<A NAME="hydrosol">
<B>hydrosol, </B>noun.<DL COMPACT><DD> a colloidal solution in water. </DL>
<A NAME="hydrosole">
<B>hydrosole, </B>noun. <B>=hydrosol.</B></DL>
<A NAME="hydrosoma">
<B>hydrosoma, </B>noun. <B>=hydrosome.</B></DL>
<A NAME="hydrosome">
<B>hydrosome, </B>noun.<DL COMPACT><DD> the entire body of a compound hydrozoan; hydroid. </DL>
<A NAME="hydrospace">
<B>hydrospace, </B>noun.<DL COMPACT><DD><B> 1. </B>the unexplored, underwater regions of the earth; inner space. <BR> <I>Ex. Other categories of plot include a growing preoccupation with "inner space" or "hydrospace" ... the opening up of the watery four-fifths of our own planet (New Scientist).</I> <DD><B> 2. </B>the field of science, technology, and industry dealing with these regions and their exploration. </DL>
<A NAME="hydrosphere">
<B>hydrosphere, </B>noun.<DL COMPACT><DD><B> 1. </B>the water on the surface of the globe; the water portion of the earth as opposed to the lithosphere and the atmosphere. <DD><B> 2. </B>the water vapor in the atmosphere. </DL>
<A NAME="hydrostat">
<B>hydrostat, </B>noun.<DL COMPACT><DD><B> 1. </B>any one of various devices for preventing injury to a steam boiler from low water. <DD><B> 2. </B>an electrical device for detecting the presence of water from overflow, leakage, etc. </DL>
<A NAME="hydrostatic">
<B>hydrostatic, </B>adjective.<DL COMPACT><DD> of or having to do with hydrostatics. adv. <B>hydrostatically.</B> </DL>
<B>hydrostatics, </B>noun.<DL COMPACT><DD> the branch of physics that deals with the laws of liquids at rest and of liquids and gases under pressure; the statics of liquids. </DL>
<A NAME="hydrosulfate">
<B>hydrosulfate, </B>noun.<DL COMPACT><DD> a compound of sulfuric acid with an organic base. </DL>
<B>hydrosulfide, </B>noun.<DL COMPACT><DD> a compound formed by the replacement of one of the hydrogen atoms of hydrogen sulfide with another element or radical, as NaHS. </DL>
<A NAME="hydrosulfite">
<B>hydrosulfite, </B>noun.<DL COMPACT><DD> a salt of hydrosulfurous acid, especially sodium hyposulfite (Na2S2O4) used as a bleaching agent. </DL>
<B>hydrotactic, </B>adjective.<DL COMPACT><DD> of or having to do with hydrotaxis. </DL>
<A NAME="hydrotaxis">
<B>hydrotaxis, </B>noun.<DL COMPACT><DD> a movement toward or away from water, as of plasmodia or other organisms. </DL>
<A NAME="hydrotechny">
<B>hydrotechny, </B>noun.<DL COMPACT><DD> hydraulic engineering with special reference to the storage and distribution of water; the technics of water supply. </DL>
<A NAME="hydrotherapeutic">
<B>hydrotherapeutic, </B>adjective.<DL COMPACT><DD> of or having to do with hydrotherapy. </DL>
<B>hydrotherapy, </B>noun.<DL COMPACT><DD> the treatment of disease by means of water; hydropathy. noun <B>hydrotherapist.</B> </DL>
<A NAME="hydrothermal">
<B>hydrothermal, </B>adjective.<DL COMPACT><DD> of or having to do with heated water, especially with the action of heated waters in producing geological changes by dissolving and redepositing minerals. adv. <B>hydrothermally.</B> </DL>
