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electrovalent bond |
Noun
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a chemical bond in which one atom loses an electron to form a positive ion and the other atom gains an electron to form a negative ion |
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electrostatic bond |
Noun
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a chemical bond in which one atom loses an electron to form a positive ion and the other atom gains an electron to form a negative ion |
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east wind |
Noun
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a wind from the east |
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easter |
Noun
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a wind from the east |
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elastic energy |
Noun
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potential energy that is stored when a body is deformed (as in a coiled spring) |
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elastic potential energy |
Noun
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potential energy that is stored when a body is deformed (as in a coiled spring) |
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electrical phenomenon |
Noun
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a physical phenomenon involving electricity |
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electric potential |
Noun
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the difference in electrical charge between two points in a circuit expressed in volts |
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evoked potential |
Noun
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the electrical response of the central nervous system produced by an external stimulus |
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electric dipole moment |
Noun
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the dipole moment in an electric dipole |
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elves |
Noun
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an acronym for emissions of light and very low frequency perturbations due to electromagnetic pulse sources |
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equinoctial storm |
Noun
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a violent rainstorm near the time of an equinox |
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equatorial current |
Noun
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any of the ocean currents that flow westward at the equator |
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electric resistance |
Noun
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a material's opposition to the flow of electric current |
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electrical resistance |
Noun
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a material's opposition to the flow of electric current |
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electrical storm |
Noun
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a storm resulting from strong rising air currents |
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electric storm |
Noun
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a storm resulting from strong rising air currents |
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even chance |
Noun
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an unpredictable phenomenon |
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electric arc |
Noun
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electrical conduction through a gas in an applied electric field |
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electromotive force |
Noun
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the rate at which energy is drawn from a source that produces a flow of electricity in a circuit |
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electric discharge |
Noun
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electrical conduction through a gas in an applied electric field |
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emf |
Noun
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the rate at which energy is drawn from a source that produces a flow of electricity in a circuit |
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elan vital |
Noun
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(biology) a hypothetical force (not physical or chemical) once thought by Henri Bergson to cause the evolution and development of organisms |
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electrical conduction |
Noun
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the passage of electricity through a conductor |
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elements |
Noun
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violent or severe weather (viewed as caused by the action of the four elements) |
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electrical disturbance |
Noun
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electrical signals produced by unwanted sources (atmospherics or receiver noise or unwanted transmitters) |
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electromagnetic interaction |
Noun
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an interaction between charged elementary particles that is intermediate in strength between the strong and weak interactions |
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eastern white pine |
Noun
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tall-growing pine of eastern North America |
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ephedra |
Noun
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jointed and nearly leafless desert shrub having reduced scalelike leaves and reddish fleshy seeds |
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endospore |
Noun
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a small asexual spore that develops inside the cell of some bacteria and algae |
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encephalartos |
Noun
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any of numerous cycads of the genus Encephalartos having stout cylindrical trunks and a terminal crown of long often spiny pinnate leaves |
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eastern spruce |
Noun
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medium-sized spruce of eastern North America |
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eastern hemlock |
Noun
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common forest tree of the eastern United States and Canada |
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eastern red cedar |
Noun
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small juniper found east of Rocky Mountains having a conic crown, brown bark that peels in shreds, and small sharp needles |
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east African cedar |
Noun
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tropical African timber tree with fragrant wood |
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epicalyx |
Noun
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a group of bracts simulating a calyx as in a carnation or hibiscus |
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episperm |
Noun
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protective outer layer of seeds of flowering plants |
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endosperm |
Noun
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nutritive tissue surrounding the embryo within seeds of flowering plants |
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exogen |
Noun
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flowering plant with two cotyledons |
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epicarp |
Noun
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outermost layer of the pericarp of fruits as the skin of a peach or grape |
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exocarp |
Noun
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outermost layer of the pericarp of fruits as the skin of a peach or grape |
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endocarp |
Noun
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the hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed |
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endogen |
Noun
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a monocotyledonous flowering plant |
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earleaved umbrella tree |
Noun
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small erect deciduous tree with large leaves in coiled formations at branch tips |
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evergreen magnolia |
Noun
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evergreen tree of southern United States having large stiff glossy leaves and huge white sweet-smelling flowers |
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elkwood |
Noun
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small deciduous tree of eastern North America having creamy white flowers and large leaves in formations like umbrellas at the ends of branches |
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elk-wood |
Noun
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small deciduous tree of eastern North America having creamy white flowers and large leaves in formations like umbrellas at the ends of branches |
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elephant's ear |
Noun
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tropical South American tree having a wide-spreading crown of bipinnate leaves and coiled ear-shaped fruits |
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elephant's ear |
Noun
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any plant of the genus Alocasia having large showy basal leaves and boat-shaped spathe and reddish berries |
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eddo |
Noun
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edible starchy tuberous root of taro plants |