| 单词 | natural phenomenon |
| 释义 | natural phenomenon (once / 6393 pages) n WORD FAMILY natural phenomenon: natural phenomena, natural phenomenons USAGE EXAMPLESDespite his liberal views, Professor Smith argued that science might not totally explain natural phenomena like evolution. New York Times(Jan 01, 2017) This allowed them to ask whether the course of our current interglacial is a natural phenomenon, or the result of human changes to the environment. BBC(Dec 29, 2016) But some in the scientific community are fearful about funding for basic research, fundamental science aimed at bettering our understanding of natural phenomena. BBC(Nov 10, 2016) n all phenomena that are not artificial Hypo|Hyper chemical phenomenon any natural phenomenon involving chemistry (as changes to atoms or molecules) geological phenomenona natural phenomenon involving the structure or composition of the earth organic phenomenon(biology) a natural phenomenon involving living plants and animals physical phenomenona natural phenomenon involving the physical properties of matter and energy earthquake, quake, seism, temblorshaking and vibration at the surface of the earth resulting from underground movement along a fault plane of from volcanic activity allotropism, allotropythe phenomenon of an element existing in two or more physical forms exchangechemical process in which one atom or ion or group changes places with another crystallisation, crystallization, crystallizingthe formation of crystals dominancethe organic phenomenon in which one of a pair of alleles present in a genotype is expressed in the phenotype and the other allele of the pair is not endogenya geological phenomenon below the surface of the earth abiogenesis, autogenesis, autogeny, spontaneous generationa hypothetical organic phenomenon by which living organisms are created from nonliving matter alluvial cone, alluvial fana fan-shaped deposit where a fast flowing stream flattens out alternation of generations, heterogenesis, xenogenesisthe alternation of two or more different forms in the life cycle of a plant or animal annual ring, growth ringan annual formation of wood in plants as they grow acoustic phenomenona physical phenomenon associated with the production or transmission of sound atmospheric phenomenona physical phenomenon associated with the atmosphere bioelectricityelectric phenomena in animals or plants boundary layerthe layer of slower flow of a fluid past a surface cataclysm, catastrophea sudden violent change in the earth's surface continental driftthe gradual movement and formation of continents (as described by plate tectonics) chaosthe formless and disordered state of matter before the creation of the cosmos valencythe phenomenon of forming chemical bonds circulationmovement through a circuit; especially the movement of blood through the heart and blood vessels cloudany collection of particles (e.g., smoke or dust) or gases that is visible cyclosis, streamingthe circulation of cytoplasm within a cell deaththe permanent end of all life functions in an organism or part of an organism decalescencephenomenon that occurs when a metal is being heated and there is a sudden slowing in the rate of temperature increase; slowing is caused by a change in the internal crystal structure of the metal decay, decompositionthe organic phenomenon of rotting dehiscence(biology) release of material by splitting open of an organ or tissue; the natural bursting open at maturity of a fruit or other reproductive body to release seeds or spores or the bursting open of a surgically closed wound alluviation, deposit, sedimentationthe phenomenon of sediment or gravel accumulating desquamation, peeling, sheddingloss of bits of outer skin by peeling or shedding or coming off in scales exfoliationthe peeling off in flakes or scales of bark or dead skin diapedesispassage of blood cells (especially white blood cells) through intact capillary walls and into the surrounding tissue electrical phenomenona physical phenomenon involving electricity electricitya physical phenomenon associated with stationary or moving electrons and protons energyany source of usable power energy, free energy(physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs power(physics) the rate of doing work; measured in watts (= joules/second) eventa phenomenon located at a single point in space-time; the fundamental observational entity in relativity theory facilitation(neurophysiology) phenomenon that occurs when two or more neural impulses that alone are not enough to trigger a response in a neuron combine to trigger an action potential alluvion, deluge, flood, inundationthe rising of a body of water and its overflowing onto normally dry land food chain(ecology) a community of organisms where each member is eaten in turn by another member food pyramid(ecology) a hierarchy of food chains with the principal predator at the top; each level preys on the level below food cycle, food web(ecology) a community of organisms where there are several interrelated food chains field, field of force, force fieldthe space around a radiating body within which its electromagnetic oscillations can exert force on another similar body not in contact with it force(physics) the influence that produces a change in a physical quantity gene expressionconversion of the information encoded in a gene first into messenger RNA and then to a protein frost heave, frost heavingupthrust of ground or pavement caused by the freezing of moist soil histocompatibilitycondition in which the cells of one tissue can survive in the presence of cells of another tissue hysteresisthe lagging of an effect behind its cause; especially the phenomenon in which the magnetic induction of a ferromagnetic material lags behind the changing magnetic field lifethe organic phenomenon that distinguishes living organisms from nonliving ones life cyclea series of stages through which an organism passes between recurrences of a primary stage resonancean excited state of a stable particle causing a sharp maximum in the probability of absorption of electromagnetic radiation mechanical phenomenona physical phenomenon associated with the equilibrium or motion of objects opacitythe phenomenon of not permitting the passage of electromagnetic radiation optical phenomenona physical phenomenon related to or involving light pleomorphism(biology) the appearance of two or more distinctly different forms in the life cycle of some organisms polymorphism(biology) the existence of two or more forms of individuals within the same animal species (independent of sex differences) pleomorphism, polymorphism(chemistry) the existence of different kinds of crystal of the same chemical compound polymorphism(genetics) the genetic variation within a population that natural selection can operate on force per unit area, pressure, pressure levelthe force applied to a unit area of surface; measured in pascals (SI unit) or in dynes (cgs unit) recognition(biology) the ability of one molecule to attach to another molecule that has a complementary shape reflection, reflexionthe phenomenon of a propagating wave (light or sound) being thrown back from a surface refractionthe change in direction of a propagating wave (light or sound) when passing from one medium to another rejection(medicine) an immunological response that refuses to accept substances or organisms that are recognized as foreign greening, rejuvenationthe phenomenon of vitality and freshness being restored resolution, resolving powerthe ability of a microscope or telescope to measure the angular separation of images that are close together resolution(computer science) the number of pixels per square inch on a computer-generated display; the greater the resolution, the better the picture sex linkagean association between genes in sex chromosomes that makes some characteristics appear more frequently in one sex than in the other conduction, conductivitythe transmission of heat or electricity or sound propagationthe movement of a wave through a medium fundamental interaction, interaction(physics) the transfer of energy between elementary particles or between an elementary particle and a field or between fields; mediated by gauge bosons surface tensiona phenomenon at the surface of a liquid caused by intermolecular forces syzygythe straight line configuration of 3 celestial bodies (as the sun and earth and moon) in a gravitational system transgressionthe spreading of the sea over land as evidenced by the deposition of marine strata over terrestrial strata transparence, transparencypermitting the free passage of electromagnetic radiation turbulence, turbulencyunstable flow of a liquid or gas volcanismthe phenomena associated with volcanic activity chopthe irregular motion of waves (usually caused by wind blowing in a direction opposite to the tide) floatation, flotationthe phenomenon of floating (remaining on the surface of a liquid without sinking) state, state of matter(chemistry) the three traditional states of matter are solids (fixed shape and volume) and liquids (fixed volume and shaped by the container) and gases (filling the container) phenomenon any state or process known through the senses rather than by intuition or reasoning |
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