| endocrinology | (noun) the branch of medicine dealing with the endocrine glands and their secretions | - |
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| endoderm | (noun) the inner germ layer that develops into the lining of the digestive and respiratory systems | Synonyms: endoblast, entoblast, entoderm, hypoblast |
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| endodontia | (noun) the branch of dentistry dealing with diseases of the dental pulp | Synonyms: endodontics |
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| endodontics | (noun) the branch of dentistry dealing with diseases of the dental pulp | Synonyms: endodontia |
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| endodontist | (noun) a dentist specializing in diseases of the dental pulp and nerve | - |
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| endogamy | (noun) marriage within one's own tribe or group as required by custom or law | Synonyms: inmarriage, intermarriage |
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| endogen | (noun) a monocotyledonous flowering plant; the stem grows by deposits on its inside | Synonyms: liliopsid, monocot, monocotyledon |
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| endogeny | (noun) a geological phenomenon below the surface of the earth | - |
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| endolymph | (noun) the bodily fluid that fills the membranous labyrinth of the inner ear | - |
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| endometriosis | (noun) the presence of endometrium elsewhere than in the lining of the uterus; causes premenstrual pain and dysmenorrhea | Synonyms: adenomyosis |
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| endometritis | (noun) inflammation of the lining of the uterus (of the endometrium) | Synonyms: metritis |
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| endometrium | (noun) (pregnancy) the mucous membrane that lines the uterus; thickens under hormonal control and (if pregnancy does not occur) is shed in menstruation; if pregnancy occurs it is shed along with the placenta at parturition | - |
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| endomorph | (noun) a heavy person with a soft and rounded body | - |
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| endomorphy | (noun) round, fat, and heavy | Synonyms: pyknic type |
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| endoneurium | (noun) delicate connective tissue around individual nerve fibers in nerve | - |
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| endonuclease | (noun) a nuclease that cleaves nucleic acids at interior bonds and so produces fragments of various sizes | - |
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| endoparasite | (noun) any of various parasites that live in the internal organs of animals (especially intestinal worms) | Synonyms: endozoan, entoparasite, entozoan, entozoon |
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| endoplasm | (noun) the inner portion of the cytoplasm of a cell | - |
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| endopsammon | (noun) The microscopic fauna of sand and mud. | - |
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| endorphin | (noun) a neurochemical occurring naturally in the brain and having analgesic properties | - |
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| endorsement | (noun) the act of endorsing | Synonyms: indorsement |
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| (noun) formal and explicit approval | Synonyms: countenance, imprimatur, indorsement, sanction, warrant |
| (noun) a promotional statement (as found on the dust jackets of books) | Synonyms: blurb, indorsement |
| (noun) a speech seconding a motion | Synonyms: indorsement, second, secondment |
| (noun) a signature that validates something | Synonyms: indorsement |
| endorser | (noun) someone who expresses strong approval | Synonyms: indorser, ratifier, subscriber |
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| (noun) a person who transfers his ownership interest in something by signing a check or negotiable security | Synonyms: indorser |
| endoscope | (noun) a long slender medical instrument for examining the interior of a bodily organ or performing minor surgery | - |
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| endoscopy | (noun) visual examination of the interior of a hollow body organ by use of an endoscope | - |
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| endoskeleton | (noun) the internal skeleton; bony and cartilaginous structure (especially of vertebrates) | - |
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| endosperm | (noun) nutritive tissue surrounding the embryo within seeds of flowering plants | - |
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| endospore | (noun) a small asexual spore that develops inside the cell of some bacteria and algae | - |
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| endosteum | (noun) vascular membrane that lines the inner surface of long bones | - |
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| endothelium | (noun) an epithelium of mesoblastic origin; a thin layer of flattened cells that lines the inside of some body cavities | - |
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| endotoxin | (noun) a toxin that is confined inside the microorganisms and is released only when the microorganisms are broken down or die | - |
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| endowment | (noun) the act of endowing with a permanent source of income | - |
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| (noun) natural abilities or qualities | Synonyms: gift, natural endowment, talent |
| (noun) the capital that provides income for an institution | Synonyms: endowment fund |
| endozoan | (noun) any of various parasites that live in the internal organs of animals (especially intestinal worms) | Synonyms: endoparasite, entoparasite, entozoan, entozoon |
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| endplate | (noun) the flattened end of a motor neuron that transmits neural impulses to a muscle | Synonyms: end-plate, motor end plate |
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| endpoint | (noun) a place where something ends or is complete | Synonyms: end point, termination, terminus |
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| endurance | (noun) the power to withstand hardship or stress | - |
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| (noun) a state of surviving; remaining alive | Synonyms: survival |
| enduringness | (noun) permanence by virtue of the power to resist stress or force | Synonyms: durability, lastingness, strength |
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| enema | (noun) an injection of a liquid through the anus to stimulate evacuation; sometimes used for diagnostic purposes | Synonyms: clyster |
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| enemy | (noun) an opposing military force | - |
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| (noun) any hostile group of people | - |
| (noun) an armed adversary (especially a member of an opposing military force) | Synonyms: foe, foeman, opposition |
| (noun) a personal enemy | Synonyms: foe |
| energetism | (noun) the philosophical theory that energy is the substrate of all phenomena and that all observable changes can be interpreted as transformations of one kind of energy into another. | Synonyms: energetic monism |
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| energid | (noun) a biological unit consisting of a nucleus and the body of cytoplasm with which it interacts | Synonyms: protoplast |
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| energiser | (noun) a device that supplies electrical energy | Synonyms: energizer |
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| (noun) someone who imparts energy and vitality and spirit to other people | Synonyms: animator, energizer, vitaliser, vitalizer |
| energizer | (noun) a device that supplies electrical energy | Synonyms: energiser |
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| (noun) someone who imparts energy and vitality and spirit to other people | Synonyms: animator, energiser, vitaliser, vitalizer |
| energizing | (noun) the activity of causing to have energy and be active | Synonyms: activating, activation |
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| energy | (noun) forceful exertion | Synonyms: vigor, vigour, zip |
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| (noun) an imaginative lively style (especially style of writing) | Synonyms: muscularity, vigor, vigour, vim |
| (noun) enterprising or ambitious drive | Synonyms: get-up-and-go, push |
| (noun) (physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs | Synonyms: free energy |
| (noun) any source of usable power | - |
| (noun) a healthy capacity for vigorous activity | Synonyms: vim, vitality |
| enervation | (noun) surgical removal of a nerve | - |
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| (noun) lack of vitality | - |
| (noun) serious weakening and loss of energy | Synonyms: debilitation, enfeeblement, exhaustion |
| enfeeblement | (noun) serious weakening and loss of energy | Synonyms: debilitation, enervation, exhaustion |
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| enfeoffment | (noun) under the feudal system, the deed by which a person was given land in exchange for a pledge of service | - |
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| enfilade | (noun) gunfire directed along the length rather than the breadth of a formation | Synonyms: enfilade fire |
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| enflurane | (noun) a nonflammable liquid (trade name Ethrane) used as an inhalation general anesthetic | Synonyms: Ethrane |
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| enfolding | (noun) the action of enfolding something | Synonyms: involution |
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| enforcement | (noun) the act of enforcing; ensuring observance of or obedience to | - |
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| enforcer | (noun) one whose job it is to execute unpleasant tasks for a superior | Synonyms: hatchet man |
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| enfranchisement | (noun) the act of certifying or bestowing a franchise on | Synonyms: certification |
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| (noun) a statutory right or privilege granted to a person or group by a government (especially the rights of citizenship and the right to vote) | Synonyms: franchise |
| (noun) freedom from political subjugation or servitude | - |
| engagement | (noun) the act of sharing in the activities of a group | Synonyms: involution, involvement, participation |
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| (noun) a hostile meeting of opposing military forces in the course of a war | Synonyms: battle, conflict, fight |
| (noun) the act of giving someone a job | Synonyms: employment |
| (noun) employment for performers or performing groups that lasts for a limited period of time | Synonyms: booking |
| (noun) a mutual promise to marry | Synonyms: betrothal, troth |
| (noun) contact by fitting together | Synonyms: interlocking, mesh, meshing |
| (noun) a meeting arranged in advance | Synonyms: appointment, date |
| engelmannia | (noun) common erect hairy perennial of plains and prairies of southern and central United States having flowers that resemble sunflowers | - |
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| engine | (noun) motor that converts thermal energy to mechanical work | - |
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| (noun) a wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks | Synonyms: locomotive, locomotive engine, railway locomotive |
| (noun) an instrument or machine that is used in warfare, such as a battering ram, catapult, artillery piece, etc. | - |
| (noun) something used to achieve a purpose | - |
| engineer | (noun) a person who uses scientific knowledge to solve practical problems | Synonyms: applied scientist, technologist |
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| (noun) the operator of a railway locomotive | Synonyms: engine driver, locomotive engineer, railroad engineer |
| engineering | (noun) the practical application of technical and scientific knowledge to commerce or industry | - |
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| (noun) a room (as on a ship) in which the engine is located | Synonyms: engine room |
| (noun) the discipline dealing with the art or science of applying scientific knowledge to practical problems | Synonyms: applied science, engineering science, technology |
| enginery | (noun) machinery consisting of engines collectively | - |
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| engobe | (noun) a clay slip which is colored with metal oxides or stains, used for coating the surface of a pot either before or after bisque firing. | - |
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| engorgement | (noun) eating ravenously or voraciously to satiation | - |
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| (noun) congestion with blood | - |
| engram | (noun) a postulated biochemical change (presumably in neural tissue) that represents a memory | Synonyms: memory trace |
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| engraver | (noun) a printmaker who prints from an engraved printing plate | - |
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| (noun) a skilled worker who can inscribe designs or writing onto a surface by carving or etching | - |
| engraving | (noun) making engraved or etched plates and printing designs from them | Synonyms: etching |
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| (noun) a block or plate or other hard surface that has been engraved | - |
| (noun) a print made from an engraving | - |
| engrossment | (noun) the quality of being intent and concentrated | Synonyms: intentness |
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| (noun) the mental state of being preoccupied by something | Synonyms: absorption, preoccupancy, preoccupation |
| (noun) complete attention; intense mental effort | Synonyms: absorption, concentration, immersion |
| enhancement | (noun) an improvement that makes something more agreeable | Synonyms: sweetening |
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| enhancer | (noun) anything that serves by contrast to call attention to another thing's good qualities | Synonyms: foil |
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| enigma | (noun) something that baffles understanding and cannot be explained | Synonyms: closed book, mystery, secret |
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| (noun) a difficult problem | Synonyms: brain-teaser, conundrum, riddle |
| enigmaticness | (noun) Mysteriousness, complexity; the property of being puzzling or inexplicable. | - |
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| (noun) The quality of a person of puzzling, secretive or contradictory character. | - |
| enjambement | (noun) the continuation of a syntactic unit from one line of verse into the next line without a pause | Synonyms: enjambment |
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| enjambment | (noun) the continuation of a syntactic unit from one line of verse into the next line without a pause | Synonyms: enjambement |
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| enjoining | (noun) (law) a judicial remedy issued in order to prohibit a party from doing or continuing to do a certain activity | Synonyms: cease and desist order, enjoinment, injunction |
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| enjoinment | (noun) (law) a judicial remedy issued in order to prohibit a party from doing or continuing to do a certain activity | Synonyms: cease and desist order, enjoining, injunction |
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| enjoyableness | (noun) pleasantness resulting from something that can be enjoyed | - |
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| enjoyer | (noun) a person who delights in having or using or experiencing something | - |
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| enjoyment | (noun) act of receiving pleasure from something | Synonyms: delectation |
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| (noun) (law) the exercise of the legal right to enjoy the benefits of owning property | Synonyms: use |
| (noun) the pleasure felt when having a good time | - |
| enkephalin | (noun) an endorphin having opiate qualities that occurs in the brain and spinal cord and elsewhere | - |
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| enlargement | (noun) the act of increasing (something) in size or volume or quantity or scope | Synonyms: expansion |
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| (noun) a photographic print that has been enlarged | Synonyms: blowup, magnification |
| (noun) a discussion that provides additional information | Synonyms: elaboration, expansion |
| (noun) the state of being enlarged | - |
| enlarger | (noun) photographic equipment consisting of an optical projector used to enlarge a photograph | - |
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| enlightened | (noun) people who have been introduced to the mysteries of some field or activity | Synonyms: initiate |
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| enlightenment | (noun) education that results in understanding and the spread of knowledge | - |
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| (noun) (Hinduism and Buddhism) the beatitude that transcends the cycle of reincarnation; characterized by the extinction of desire and suffering and individual consciousness | Synonyms: nirvana |
| enlistee | (noun) any new member or supporter (as in the armed forces) | Synonyms: recruit |
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| enlisting | (noun) the act of getting recruits; enlisting people for the army (or for a job or a cause etc.) | Synonyms: recruitment |
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| enlistment | (noun) the act of enlisting (as in a military service) | - |
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| (noun) a period of time spent in military service | Synonyms: duty tour, hitch, term of enlistment, tour, tour of duty |
| enlivener | (noun) an agent that gives or restores life or vigor | Synonyms: invigorator, quickener |
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| enmity | (noun) the feeling of a hostile person | Synonyms: hostility, ill will |
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| (noun) a state of deep-seated ill-will | Synonyms: antagonism, hostility |
| ennead | (noun) the cardinal number that is the sum of eight and one | Synonyms: 9, IX, Nina from Carolina, nine, niner |
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| ennoblement | (noun) the act of raising someone to the nobility | - |
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| (noun) the state of being noble | - |
| ennui | (noun) the feeling of being bored by something tedious | Synonyms: boredom, tedium |
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| enol | (noun) an organic compound that contains a hydroxyl group bonded to a carbon atom which in turn is doubly bonded to another carbon atom | - |
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| enologist | (noun) a specialist in wine making | Synonyms: fermentologist, oenologist |
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| enology | (noun) the art of wine making | Synonyms: oenology |
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| enophile | (noun) someone who appreciates wine | Synonyms: oenophile |
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| enormity | (noun) an act of extreme wickedness | - |
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| (noun) the quality of extreme wickedness | - |
| (noun) the quality of being outrageous | Synonyms: outrageousness |
| (noun) vastness of size or extent | - |
| enormousness | (noun) unusual largeness in size or extent or number | Synonyms: grandness, greatness, immenseness, immensity, sizeableness, vastness, wideness |
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| enosis | (noun) the union of Greece and Cyprus (which is the goal of a group of Greek Cypriots) | - |
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| enough | (noun) an adequate quantity; a quantity that is large enough to achieve a purpose | Synonyms: sufficiency |
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| enquirer | (noun) someone who asks a question | Synonyms: asker, inquirer, querier, questioner |
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| enquiry | (noun) a systematic investigation of a matter of public interest | Synonyms: inquiry |
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| (noun) a search for knowledge | Synonyms: inquiry, research |
| (noun) an instance of questioning | Synonyms: inquiry, interrogation, query, question |
| enragement | (noun) a feeling of intense anger and impatience | Synonyms: infuriation |
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