| electron | (noun) an elementary particle with negative charge | Synonyms: negatron |
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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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| 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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| 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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| electroplater | (noun) a plater who uses electrolysis | - |
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| electroretinogram | (noun) a graphical recording of the electrical activity of the retina that results when light is flashed into the eye | - |
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| electroscope | (noun) measuring instrument that detects electric charge; two gold leaves diverge owing to repulsion of charges with like sign | - |
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| electroshock | (noun) the administration of a strong electric current that passes through the brain to induce convulsions and coma | Synonyms: ECT, electroconvulsive therapy, electroshock therapy |
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| electrosleep | (noun) unconsciousness brought about by the passage of a low voltage electric current through the brain | - |
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| electrostatics | (noun) the branch of physics that deals with static electricity | - |
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| electrosurgery | (noun) surgery performed with electrical devices (as in electrocautery) | - |
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| electrotherapist | (noun) someone who specializes in the treatment of disease by electricity | - |
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| electrotherapy | (noun) the therapeutic application of electricity to the body (as in the treatment of various forms of paralysis) | Synonyms: electric healing, electrical healing, galvanism |
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| electrum | (noun) an alloy of gold and silver | - |
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| elegance | (noun) a refined quality of gracefulness and good taste | - |
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| (noun) a quality of neatness and ingenious simplicity in the solution of a problem (especially in science or mathematics) | - |
| elegist | (noun) the author of a mournful poem lamenting the dead | - |
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| elegy | (noun) a mournful poem; a lament for the dead | Synonyms: lament |
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| element | (noun) an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system | Synonyms: component, constituent |
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| (noun) an abstract part of something | Synonyms: component, constituent, factor, ingredient |
| (noun) the most favorable environment for a plant or animal | - |
| (noun) a straight line that generates a cylinder or cone | - |
| (noun) the situation in which you are happiest and most effective | - |
| (noun) any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter | Synonyms: chemical element |
| (noun) one of four substances thought in ancient and medieval cosmology to constitute the physical universe | - |
| elements | (noun) violent or severe weather (viewed as caused by the action of the four elements) | - |
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| elemi | (noun) fragrant resin obtain from trees of the family Burseraceae and used as incense | Synonyms: gum elemi |
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| elephant | (noun) five-toed pachyderm | - |
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| (noun) the symbol of the Republican Party; introduced in cartoons by Thomas Nast in 1874 | - |
| elephantiasis | (noun) hypertrophy of certain body parts (usually legs and scrotum); the end state of the disease filariasis | - |
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| elevated | (noun) a railway that is powered by electricity and that runs on a track that is raised above the street level | Synonyms: el, elevated railroad, elevated railway, overhead railway |
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| elevation | (noun) the act of increasing the wealth or prestige or power or scope of something | Synonyms: aggrandisement, aggrandizement |
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| (noun) drawing of an exterior of a structure | - |
| (noun) distance of something above a reference point (such as sea level) | - |
| (noun) (ballet) the height of a dancer's leap or jump | - |
| (noun) the event of something being raised upward | Synonyms: lift, raising |
| (noun) a raised or elevated geological formation | Synonyms: natural elevation |
| (noun) angular distance above the horizon (especially of a celestial object) | Synonyms: ALT, altitude, EL |
| (noun) the highest level or degree attainable; the highest stage of development | Synonyms: acme, height, meridian, peak, pinnacle, summit, superlative, tiptop, top |
| elevator | (noun) lifting device consisting of a platform or cage that is raised and lowered mechanically in a vertical shaft in order to move people from one floor to another in a building | Synonyms: lift |
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| (noun) the airfoil on the tailplane of an aircraft that makes it ascend or descend | - |
| eleven | (noun) a team that plays football | Synonyms: football team |
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| (noun) the cardinal number that is the sum of ten and one | Synonyms: 11, XI |
| eleventh | (noun) position 11 in a countable series of things | - |
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| encephalocele | (noun) protrusion of brain tissue through a congenital fissure in the skull | - |
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| endoskeleton | (noun) the internal skeleton; bony and cartilaginous structure (especially of vertebrates) | - |
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| entelechy | (noun) (Aristotle) the state of something that is fully realized; actuality as opposed to potentiality | - |
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| exoskeleton | (noun) the exterior protective or supporting structure or shell of many animals (especially invertebrates) including bony or horny parts such as nails or scales or hoofs | - |
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| eyelessness | (noun) blindness due to loss of the eyes | - |
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| eyelet | (noun) a small hole (usually round and finished around the edges) in cloth or leather for the passage of a cord or hook or bar | Synonyms: eyehole |
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| (noun) fastener consisting of a metal ring for lining a small hole to permit the attachment of cords or lines | Synonyms: cringle, grommet, grummet, loop |
| (noun) fabric decorated with small holes with finely stitched edges that form an ornamental pattern. | - |
| featurelessness | (noun) The state or condition of being without distinguishing features. | - |
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| feeler | (noun) one of a pair of mobile appendages on the head of e.g. insects and crustaceans; typically sensitive to touch and taste | Synonyms: antenna |
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| (noun) slender tactile process on the jaws of a fish | Synonyms: barbel |
| (noun) sensitivity similar to that of a receptor organ | Synonyms: antenna |
| (noun) a tentative suggestion designed to elicit the reactions of others | Synonyms: advance, approach, overture |
| fistmele | (noun) about seven inches; the breadth of a fist with the thumb stuck out (used especially in archery to give the correct distance of the string from the bow) | - |
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| flannelette | (noun) a cotton fabric imitating flannel | - |
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| foreleg | (noun) the forelimb of a quadruped | - |
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| freewheeler | (noun) someone acting freely or even irresponsibly | Synonyms: free agent, free spirit |
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| galactocele | (noun) a cystic tumor containing milk or a milky substance (especially in the mammary glands) | - |
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| gelechiid | (noun) small slender-winged moths whose larvae are agricultural pests | Synonyms: gelechiid moth |
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| gospeler | (noun) a preacher of the Christian gospel | Synonyms: evangelist, gospeller, revivalist |
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| gracelessness | (noun) an unpleasant lack of grace in carriage or form or movement or expression | Synonyms: ungracefulness |
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| (noun) the inelegance of someone stiff and unrelaxed (as by embarrassment) | Synonyms: awkwardness, clumsiness, stiffness |
| groveler | (noun) someone who humbles himself as a sign of respect; who behaves as if he had no self-respect | Synonyms: apple polisher, bootlicker, fawner, groveller, truckler |
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| haematocele | (noun) swelling caused by blood collecting in a body cavity (especially a swelling of the membrane covering the testis) | Synonyms: haematocoele, hematocele, hematocoele |
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| haematocoele | (noun) swelling caused by blood collecting in a body cavity (especially a swelling of the membrane covering the testis) | Synonyms: haematocele, hematocele, hematocoele |
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| hematocele | (noun) swelling caused by blood collecting in a body cavity (especially a swelling of the membrane covering the testis) | Synonyms: haematocele, haematocoele, hematocoele |
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| hematocoele | (noun) swelling caused by blood collecting in a body cavity (especially a swelling of the membrane covering the testis) | Synonyms: haematocele, haematocoele, hematocele |
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| homeless | (noun) poor people who unfortunately do not have a home to live in | - |
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| (noun) someone unfortunate without housing | Synonyms: homeless person |
| homelessness | (noun) the state or condition of having no home (especially the state of living in the streets) | - |
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| hopelessness | (noun) the despair you feel when you have abandoned hope of comfort or success | - |
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| horseleech | (noun) any of several large freshwater leeches | - |
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| hydrocele | (noun) disorder in which serous fluid accumulates in a body sac (especially in the scrotum) | - |
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| hydroelectricity | (noun) electricity produced by water power | - |
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| immunoelectrophoresis | (noun) electrophoresis to separate antigens and antibodies | - |
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| inelegance | (noun) the quality of lacking refinement and good taste | - |
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| irrelevance | (noun) the lack of a relation of something to the matter at hand | Synonyms: irrelevancy |
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| irrelevancy | (noun) the lack of a relation of something to the matter at hand | Synonyms: irrelevance |
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| jeweler | (noun) someone in the business of selling jewelry | Synonyms: jeweller |
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| (noun) someone who makes jewelry | Synonyms: jeweller, jewelry maker |
| keratocele | (noun) hernia of the cornea | - |
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| keteleeria | (noun) Asiatic conifers resembling firs | - |
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| kneeler | (noun) a board (sometimes cushioned) for someone to kneel on | - |
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| (noun) a person in a kneeling position | - |
| lancelet | (noun) small translucent lancet-shaped burrowing marine animal; primitive forerunner of the vertebrates | Synonyms: amphioxus |
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| laparocele | (noun) hernia through the abdomen | - |
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| leveler | (noun) a radical who advocates the abolition of social distinctions | Synonyms: leveller |
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| libeler | (noun) one who attacks the reputation of another by slander or libel | Synonyms: backbiter, defamer, maligner, slanderer, traducer, vilifier |
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| lifelessness | (noun) not having life | Synonyms: inanimateness |
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| (noun) a state of no motion or movement | Synonyms: motionlessness, stillness |
| lustrelessness | (noun) the property of having little or no contrast; lacking highlights or gloss | Synonyms: flatness, lusterlessness, mat, matt, matte |
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| macroelement | (noun) a chemical element required in relatively large quantities for the normal physiologic processes of the body. | Synonyms: major mineral |
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| mantelet | (noun) short cape worn by women | Synonyms: mantilla |
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| (noun) portable bulletproof shelter | Synonyms: mantlet |
| melee | (noun) a noisy riotous fight | Synonyms: battle royal, scrimmage |
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| melena | (noun) abnormally dark tarry feces containing blood (usually from gastrointestinal bleeding) | Synonyms: melaena |
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| mendelevium | (noun) a radioactive transuranic element synthesized by bombarding einsteinium with alpha particles (Md is the current symbol for mendelevium but Mv was formerly the symbol) | Synonyms: atomic number 101, Md, Mv |
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| meningocele | (noun) a congenital anomaly of the central nervous system in which a sac protruding from the brain or the spinal meninges contains cerebrospinal fluid (but no nerve tissue) | - |
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| microelectronics | (noun) the branch of electronics that deals with miniature components | - |
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| modeler | (noun) a person who creates models | Synonyms: modeller |
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| myelencephalon | (noun) the posterior part of the hindbrain in developing vertebrates; forms the medulla oblongata in adults | - |
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| myelomeningocele | (noun) a congenital defect of the central nervous system in which a sac containing part of the spinal cord and its meninges protrude through a gap in the vertebral column; frequently accompanied by hydrocephalus and mental retardation | - |
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| namelessness | (noun) the state of being anonymous | Synonyms: anonymity |
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| nervelessness | (noun) fearless self-possession in the face of danger | Synonyms: coolness |
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| noiselessness | (noun) the property of making no noise | - |
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| nonallele | (noun) genes that are not competitors at the same locus | - |
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| novelette | (noun) a short novel | Synonyms: novella |
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| omelet | (noun) beaten eggs or an egg mixture cooked until just set; may be folded around e.g. ham or cheese or jelly | Synonyms: omelette |
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| omelette | (noun) beaten eggs or an egg mixture cooked until just set; may be folded around e.g. ham or cheese or jelly | Synonyms: omelet |
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| omphalocele | (noun) protrusion of the intestine and omentum through a hernia in the abdominal wall near the navel; usually self correcting after birth | Synonyms: umbilical hernia |
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| oscheocele | (noun) swelling of the scrotum | Synonyms: oscheocoele |
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| oscheocoele | (noun) swelling of the scrotum | Synonyms: oscheocele |
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| parallelepiped | (noun) a prism whose bases are parallelograms | Synonyms: parallelepipedon, parallelopiped, parallelopipedon |
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| parallelepipedon | (noun) a prism whose bases are parallelograms | Synonyms: parallelepiped, parallelopiped, parallelopipedon |
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| pedelec | (noun) a bicycle built with a motor to aid the cyclist to turn the pedals | - |
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| peeler | (noun) a device for peeling vegetables or fruits | - |
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| (noun) a performer who provides erotic entertainment by undressing to music | Synonyms: ecdysiast, exotic dancer, stripper, striptease, striptease artist, stripteaser |
| (noun) a worker who peels the skins from fruits and vegetables | - |
| pelecypod | (noun) marine or freshwater mollusks having a soft body with platelike gills enclosed within two shells hinged together | Synonyms: bivalve, lamellibranch |
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| periselene | (noun) periapsis in orbit around the moon | Synonyms: perilune |
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| photoelectricity | (noun) electricity generated by light or affected by light | - |
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| photoelectron | (noun) an electron that is emitted from an atom or molecule by an incident photon | - |
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| phototelegraph | (noun) an apparatus for transmitting pictures by phototelegraphy. | - |
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| phototelegraphy | (noun) an early technology for the transmission of facsimiles. | - |
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