| 单词 | fluid |
| 释义 | fluid (once / 491 pages) 1nadj 2adj 3adj Something that is unstable or subject to change can be described as fluid. The fluid political situation in a particular country makes it unsafe to travel there, with the constant possibility of a violent uprising. A liquid is a fluid — something that flows easily when poured — although gases can also be called fluid. When your doctor told you to drink lots of fluids to help your cold symptoms, she probably meant things like water or orange juice, not root beer floats. If a movement is smooth, it can also be described as fluid. You have to make fluid arm movements in ballet so you look graceful. WORD FAMILYfluid: fluidity, fluidly, fluidness, fluids+/fluidity: fluidities, semifluidity USAGE EXAMPLESHowever, our modern, sedentary lifestyles mean that our secondary hearts tend to weaken, which permits excessive fluid pooling into the lower body. Washington Post(Dec 29, 2016) Lowell was in congestive heart failure, his lungs filling with fluid. The New Yorker(Jan 01, 2017) The minimal use of props allows for fluid scene changes, and the symbolic white sheet creates some dramatic stage images. New York Times(Jan 01, 2017) 1 1n continuous amorphous matter that tends to flow and to conform to the outline of its container: a liquid or a gas Hypo|Hyper gas a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely liquidfluid matter having no fixed shape but a fixed volume atmospherethe envelope of gases surrounding any celestial body argonon, inert gas, noble gasany of the chemically inert gaseous elements of the helium group in the periodic table Cl, atomic number 17, chlorinea common nonmetallic element belonging to the halogens; best known as a heavy yellow irritating toxic gas; used to purify water and as a bleaching agent and disinfectant; occurs naturally only as a salt (as in sea water) F, atomic number 9, fluorinea nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite H, atomic number 1, hydrogena nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe N, atomic number 7, nitrogena common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues O, atomic number 8, oxygena nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust butaneoccurs in natural gas; used in the manufacture of rubber and fuels propanecolorless gas found in natural gas and petroleum; used as a fuel afterdampa toxic mixture of gases (including carbon dioxide and carbon monoxide and nitrogen) after an explosion of firedamp in a mine firedampa mixture of gases (mostly methane) that form in coal mines and become explosive when mixed with air arsinea poisonous colorless flammable gas used in organic synthesis and to dope transistors and as a poison gas in warfare nitrogen dioxidea highly poisonous brown gas (NO2) nitric oxidea poisonous red-brown gas (NO) artificial blooda liquid that can carry large amounts of oxygen and can serve as a temporary substitute for blood blow gas, blowing gasthe gas leaving a generator during a blow period butene, butyleneany of three isomeric hydrocarbons C4H8; all used in making synthetic rubbers cyanogena colorless toxic gas with a pungent almond odor; has been used in chemical warfare exhaust, exhaust fumes, fumesgases ejected from an engine as waste products elixira sweet flavored liquid (usually containing a small amount of alcohol) used in compounding medicines to be taken by mouth in order to mask an unpleasant taste aira mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of compressed gasgas at a high pressure that can be used as a propellant H2O, waterbinary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent ethene, ethylenea flammable colorless gaseous alkene; obtained from petroleum and natural gas and used in manufacturing many other chemicals; sometimes used as an anesthetic extravasationan extravasated liquid (blood or lymph or urine); the product of extravasation air gas, producer gasa gas made of carbon monoxide and hydrogen and nitrogen; made by passing air over hot coke formaldehyde, methanala colorless poisonous gas; made by the oxidation of methanol greenhouse emission, greenhouse gasa gas that contributes to the greenhouse effect by absorbing infrared radiation bottled gas, liquefied petroleum gashydrocarbon gases, usually propane or butane, kept under pressure water gasa mixture of hydrogen and carbon monoxide with small amounts of other gases; made by blowing steam over hot coke or coal ideal gas, perfect gasa hypothetical gas with molecules of negligible size that exert no intermolecular forces inhalantsomething that is inhaled instillationa liquid that is instilled drop by drop liquid crystala liquid exhibiting properties of a crystal that are not shown by ordinary liquids methanea colorless odorless gas used as a fuel ozonea colorless gas (O3) soluble in alkalis and cold water; a strong oxidizing agent; can be produced by electric discharge in oxygen or by the action of ultraviolet radiation on oxygen in the stratosphere (where it acts as a screen for ultraviolet radiation) phosgenea colorless poisonous gas that smells like new-mown hay; used in chemical warfare phosphinea colorless gas with a strong fishy smell; used as a pesticide poison gasa gas that is poisonous to breath or contact; used in chemical warfare propene, propylenea flammable gas obtained by cracking petroleum; used in organic synthesis mephitisa poisonous or foul smelling gas emitted from the earth sewer gasfoul-smelling gas that forms in sewers spillliquid that is spilled sublimatethe product of vaporization of a solid sulfur dioxide, sulphur dioxidea colorless toxic gas (SO2) that occurs in the gases from volcanoes; used in many manufacturing processes and present in industrial emissions; causes acid rain lachrymator, lacrimator, tear gas, teargasa gas that makes the eyes fill with tears but does not damage them; used in dispersing crowds tuberculina sterile liquid containing a purified protein derivative of the tuberculosis bacterium; used in the diagnosis of tuberculosis matter that which has mass and occupies space 2n a substance that is fluid at room temperature and pressure Hypo|Hyper coolant a fluid agent (gas or liquid) that produces cooling; especially one used to cool a system by transferring heat away from one part to another filtratethe product of filtration; a gas or liquid that has been passed through a filter ichor(Greek mythology) the rarified fluid said to flow in the veins of the Gods liquida substance that is liquid at room temperature and pressure beverage, drink, drinkable, potableany liquid suitable for drinking watera liquid necessary for the life of most animals and plants supernatantthe clear liquid that lies above a sediment or precipitate alcoholany of a series of volatile hydroxyl compounds that are made from hydrocarbons by distillation ammonia, ammonia water, ammonium hydroxidea water solution of ammonia antifreezea liquid added to the water in a cooling system to lower its freezing point distillate, distillationa purified liquid produced by condensation from a vapor during distilling; the product of distilling pyroligneous acid, wood vinegara red-brown liquid formed in distillation of wood which contains acetic acid, methanol, acetone, wood oils, and tars mediuma liquid with which pigment is mixed by a painter inka liquid used for printing or writing or drawing grumea thick viscous liquid liquora liquid substance that is a solution (or emulsion or suspension) used or obtained in an industrial process percolatethe product of percolation sheep dipa liquid mixture containing pesticides in which sheep are dipped to kill parasites snake oil(medicine) any of various liquids sold as medicine (as by a travelling medicine show) but medically worthless substance the real physical matter of which a person or thing consists 3adj characteristic of a fluid; capable of flowing and easily changing shape Syn runny liquid existing as or having characteristics of a liquid; especially tending to flow 4adj subject to change; variable a fluid situation fraught with uncertainty Syn unstable changeable, changeful such that alteration is possible; having a marked tendency to change 5adj affording change (especially in social status) 2Britain is not a truly fluid society Syn mobile changeable, changeful such that alteration is possible; having a marked tendency to change adj smooth and unconstrained in movement 3the fluid motion of a cat Syn fluent, liquid, smooth graceful characterized by beauty of movement, style, form, or execution adj in cash or easily convertible to cash liquid (or fluid) assets Syn liquid disposable free or available for use or disposition |
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