| ectasis | (noun) dilatation or distension of a hollow organ | Synonyms: ectasia |
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| ectoblast | (noun) the outer germ layer that develops into skin and nervous tissue | Synonyms: ectoderm, exoderm |
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| ectoderm | (noun) the outer germ layer that develops into skin and nervous tissue | Synonyms: ectoblast, exoderm |
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| ectodermal | (adjective) of or relating to the ectoderm | Synonyms: ectodermic |
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| ectodermic | (adjective) of or relating to the ectoderm | Synonyms: ectodermal |
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| ectomorph | (noun) a person with a thin body | - |
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| ectomorphic | (adjective) having a build with little fat or muscle but with long limbs | - |
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| ectomorphy | (noun) slender, weak, and lightweight | Synonyms: asthenic type |
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| ectoparasite | (noun) any external parasitic organism (as fleas) | Synonyms: ectozoan, ectozoon, epizoan, epizoon |
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| ectopia | (noun) abnormal position of a part or organ (especially at the time of birth) | - |
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| ectopic | (adjective) exhibiting ectopia | - |
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| ectoplasm | (noun) the outer granule-free layer of cytoplasm | - |
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| (noun) (spiritualism) a substance supposed to emanate from the body of the medium during a trance | - |
| ectoproct | (noun) sessile mossy aquatic animal having the anus of the polyp outside the crown of tentacles | - |
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| ectotherm | (noun) an animal whose body temperature varies with the temperature of its surroundings; any animal except birds and mammals | Synonyms: poikilotherm |
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| ectothermic | (adjective) of animals except birds and mammals; having body temperature that varies with the environment | Synonyms: heterothermic, poikilothermic, poikilothermous |
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| ectozoan | (adjective) of or relating to epizoa | Synonyms: epizoan |
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| (noun) any external parasitic organism (as fleas) | Synonyms: ectoparasite, ectozoon, epizoan, epizoon |
| ectozoon | (noun) any external parasitic organism (as fleas) | Synonyms: ectoparasite, ectozoan, epizoan, epizoon |
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| ectrodactyly | (noun) congenital abnormality involving the absence of some fingers or toes | - |
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| effect | (noun) an outward appearance | Synonyms: impression |
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| (noun) (of a law) having legal validity | Synonyms: force |
| (noun) an impression (especially one that is artificial or contrived) | - |
| (noun) the central meaning or theme of a speech or literary work | Synonyms: burden, core, essence, gist |
| (noun) a phenomenon that follows and is caused by some previous phenomenon | Synonyms: consequence, event, issue, outcome, result, upshot |
| (noun) a symptom caused by an illness or a drug | - |
| (verb) produce | Synonyms: effectuate, set up |
| (verb) act so as to bring into existence | - |
| effected | (adjective) settled securely and unconditionally | Synonyms: accomplished, established |
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| effecter | (noun) one who brings about a result or event; one who accomplishes a purpose | Synonyms: effector |
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| effective | (adjective) producing or capable of producing an intended result or having a striking effect | Synonyms: effectual, efficacious |
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| (adjective) existing in fact; not theoretical; real | - |
| (adjective) able to accomplish a purpose; functioning effectively | Synonyms: efficient |
| (adjective) works well as a means or remedy | - |
| (adjective) ready for service | - |
| (adjective) exerting force or influence | Synonyms: good, in effect, in force |
| effectively | (adverb) in actuality or reality or fact | Synonyms: in effect |
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| (adverb) in an effective manner | Synonyms: efficaciously |
| effectiveness | (noun) power to be effective; the quality of being able to bring about an effect | Synonyms: effectivity, effectuality, effectualness |
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| (noun) capacity to produce strong physiological or chemical effects | Synonyms: potency, strength |
| effectivity | (noun) power to be effective; the quality of being able to bring about an effect | Synonyms: effectiveness, effectuality, effectualness |
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| effector | (noun) an organ (a gland or muscle) that becomes active in response to nerve impulses | - |
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| (noun) a nerve fiber that terminates on a muscle or gland and stimulates contraction or secretion | - |
| (noun) one who brings about a result or event; one who accomplishes a purpose | Synonyms: effecter |
| effects | (noun) property of a personal character that is portable but not used in business | Synonyms: personal effects |
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| effectual | (adjective) producing or capable of producing an intended result or having a striking effect | Synonyms: effective, efficacious |
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| (adjective) having legal efficacy or force | Synonyms: legal, sound |
| effectuality | (noun) power to be effective; the quality of being able to bring about an effect | Synonyms: effectiveness, effectivity, effectualness |
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| effectually | (adverb) in an effectual manner | - |
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| effectualness | (noun) power to be effective; the quality of being able to bring about an effect | Synonyms: effectiveness, effectivity, effectuality |
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| effectuate | (verb) produce | Synonyms: effect, set up |
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| effectuation | (noun) the act of implementing (providing a practical means for accomplishing something); carrying into effect | Synonyms: implementation |
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| eject | (verb) eliminate (a substance) | Synonyms: discharge, exhaust, expel, release |
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| (verb) cause to come out in a squirt | Synonyms: force out, squeeze out, squirt |
| (verb) put out or expel from a place | Synonyms: boot out, chuck out, exclude, turf out, turn out |
| (verb) leave an aircraft rapidly, using an ejection seat or capsule | - |
| ejection | (noun) the act of forcing out someone or something | Synonyms: exclusion, expulsion, riddance |
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| (noun) the act of expelling or projecting or ejecting | Synonyms: expulsion, forcing out, projection |
| ejective | (noun) a type of consonant in some languages, e.g., Hausa, produced by sudden release of pressure from the glottis. | Synonyms: ejective consonant |
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| ejector | (noun) a mechanism in a firearm that ejects the empty shell case after firing | Synonyms: cartridge ejector |
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| (noun) An injector, ejector, steam ejector, steam injector, eductor-jet pump or thermocompressor is a type of pump. | Synonyms: eductor-jet pump, injector, steam ejector, steam injector, thermocompressor |
| (noun) a person who ousts or supplants someone else | Synonyms: ouster |
| elect | (adjective) elected but not yet installed in office | - |
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| (adjective) selected as the best | Synonyms: elite |
| (noun) an exclusive group of people | Synonyms: chosen |
| (verb) choose | - |
| (verb) select by a vote for an office or membership | - |
| elected | (adjective) subject to popular election | Synonyms: elective |
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| election | (noun) the act of selecting someone or something; the exercise of deliberate choice | - |
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| (noun) a vote to select the winner of a position or political office | - |
| (noun) the predestination of some individuals as objects of divine mercy (especially as conceived by Calvinists) | - |
| (noun) the status or fact of being elected | - |
| electioneer | (verb) work actively for a political candidate or a party | - |
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| electioneering | (noun) the campaign of a candidate to be elected | Synonyms: campaigning, candidacy, candidature, political campaign |
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| (noun) persuasion of voters in a political campaign | Synonyms: bell ringing, canvassing |
| elective | (adjective) subject to popular election | Synonyms: elected |
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| (adjective) optional | Synonyms: facultative |
| (noun) a course that the student can select from among alternatives | Synonyms: elective course |
| electiveness | (noun) Quality or state in which choice or discretion is allowed. | Synonyms: optionality |
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| elector | (noun) a citizen who has a legal right to vote | Synonyms: voter |
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| electoral | (adjective) of or relating to elections | - |
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| (adjective) relating to or composed of electors | - |
| electorate | (noun) the body of enfranchised citizens; those qualified to vote | - |
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| electric | (adjective) using or providing or producing or transmitting or operated by electricity | Synonyms: electrical |
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| (adjective) affected by emotion as if by electricity; thrilling | Synonyms: galvanic, galvanising, galvanizing |
| (adjective) (of a situation) exceptionally tense | - |
| (noun) a car that is powered by electricity | Synonyms: electric automobile, electric car |
| electrical | (adjective) relating to or concerned with electricity | - |
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| (adjective) using or providing or producing or transmitting or operated by electricity | Synonyms: electric |
| electrically | (adverb) by electricity | - |
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| electrician | (noun) a person who installs or repairs electrical or telephone lines | Synonyms: lineman, linesman |
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| electricity | (noun) keen and shared excitement | - |
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| (noun) a physical phenomenon associated with stationary or moving electrons and protons | - |
| (noun) energy made available by the flow of electric charge through a conductor | Synonyms: electrical energy, power |
| electrification | (noun) the activity of thrilling or markedly exciting some person or group | - |
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| (noun) the act of providing electricity | - |
| electrify | (verb) equip for use with electricity | Synonyms: wire |
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| (verb) charge (a conductor) with electricity | - |
| (verb) excite suddenly and intensely | - |
| electrifying | (adjective) causing a surge of emotion or excitement | Synonyms: thrilling |
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| electrocardiogram | (noun) a graphical recording of the cardiac cycle produced by an electrocardiograph | Synonyms: cardiogram, ECG, EKG |
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| electrocardiograph | (noun) medical instrument that records electric currents associated with contractions of the heart | Synonyms: cardiograph |
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| electrocardiographic | (adjective) of or relating to an electrocardiograph | - |
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| electrocardiography | (noun) diagnostic procedure consisting of recording the activity of the heart electronically with a cardiograph (and producing a cardiogram) | Synonyms: cardiography |
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| electrocautery | (noun) application of a needle heated by an electric current to destroy tissue (as to remove warts) | - |
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| electrochemical | (adjective) of or involving electrochemistry | - |
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| electrochemistry | (noun) branch of chemistry that deals with the chemical action of electricity and the production of electricity by chemical reactions | - |
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| electrocute | (verb) kill by electrocution, as in the electric chair | Synonyms: fry |
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| (verb) kill by electric shock | - |
| electrocution | (noun) killing by electric shock | - |
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| (noun) execution by electricity | Synonyms: burning |
| electrocutioner | (noun) an executioner who uses electricity to kill the condemned person | - |
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| electrode | (noun) a conductor used to make electrical contact with some part of a circuit | - |
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| electrodeposition | (noun) the deposition of a substance on an electrode by the action of electricity (especially by electrolysis) | - |
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| electrodynamometer | (noun) measuring instrument that uses the interaction of the magnetic fields of two coils to measure current or voltage or power | - |
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| electroencephalogram | (noun) a graphical record of electrical activity of the brain; produced by an electroencephalograph | Synonyms: EEG, encephalogram |
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| electroencephalograph | (noun) medical instrument that records electric currents generated by the brain | - |
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| electroencephalographic | (adjective) of or relating to an electroencephalograph | - |
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| electrograph | (noun) electrical device used for etching by electrolytic means | - |
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| (noun) an apparatus for the electrical transmission of pictures | - |
| electrolocation | (noun) The use of electroreception to locate surrounding objects. | - |
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| electrologist | (noun) someone skilled in the use of electricity to remove moles or warts or hair roots | - |
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| electrolysis | (noun) removing superfluous or unwanted hair by passing an electric current through the hair root | - |
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| (noun) (chemistry) a chemical decomposition reaction produced by passing an electric current through a solution containing ions | - |
| electrolyte | (noun) a solution that conducts electricity | - |
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| electrolytic | (adjective) of or relating to or containing an electrolyte | - |
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| (adjective) of or concerned with or produced by electrolysis | - |
| (noun) a fixed capacitor consisting of two electrodes separated by an electrolyte | Synonyms: electrolytic capacitor, electrolytic condenser |
| electromagnet | (noun) a temporary magnet made by coiling wire around an iron core; when current flows in the coil the iron becomes a magnet | - |
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| electromagnetic | (adjective) pertaining to or exhibiting magnetism produced by electric charge in motion | - |
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| electromagnetics | (noun) the branch of physics concerned with electromagnetic phenomena | Synonyms: electromagnetism |
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| electromagnetism | (noun) the branch of physics concerned with electromagnetic phenomena | Synonyms: electromagnetics |
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| (noun) magnetism produced by an electric current | - |
| electromechanical | (adjective) of or relating to or involving an electrically operated mechanical device | - |
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| electrometer | (noun) meter to measure electrostatic voltage differences; draws no current from the source | - |
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| electromotive | (adjective) concerned with or producing electric current | - |
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| electromyogram | (noun) a graphical record of electric currents associated with muscle contractions | Synonyms: EMG |
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| electromyograph | (noun) a medical instrument that records the electrical waves associated with the activity of skeletal muscles | - |
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| electromyography | (noun) diagnosis of neuromuscular disorders with the use of an electromyograph | - |
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| electron | (noun) an elementary particle with negative charge | Synonyms: negatron |
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| electronegative | (adjective) having a negative charge | Synonyms: negative, negatively charged |
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| electronegativity | (noun) (chemistry) the tendency of an atom or radical to attract electrons in the formation of an ionic bond | Synonyms: negativity |
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| electroneutral | (adjective) having no net electric charge | Synonyms: neutral |
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| electronic | (adjective) of or relating to electronics; concerned with or using devices that operate on principles governing the behavior of electrons | - |
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| (adjective) of or concerned with electrons | - |
| electronically | (adverb) by electronic means | - |
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| electronics | (noun) the branch of physics that deals with the emission and effects of electrons and with the use of electronic devices | - |
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| electrophoresis | (noun) the motion of charged particles in a colloid under the influence of an electric field; particles with a positive charge go to the cathode and negative to the anode | Synonyms: cataphoresis, dielectrolysis, ionophoresis |
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| electrophoretic | (adjective) of or relating to electrophoresis | Synonyms: cataphoretic |
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| electrophorus | (noun) a simple electrostatic generator that generates repeated charges of static electricity | - |
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| electroplate | (noun) any artifact that has been plated with a thin coat of metal by electrolysis | - |
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| (verb) coat with metal by electrolysis | - |
| electroplater | (noun) a plater who uses electrolysis | - |
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| electropositive | (adjective) having a positive charge | Synonyms: positive, positively charged |
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