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Glossary · Nouns · E

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TermTypeDefinitionClassificationsUpdated
Etanounthe 7th letter of the Greek alphabetverifiedMay 18, 2026
Etagerenouna piece of furniture with open shelves for displaying small ornamentsverifiedMay 18, 2026
Etaminnouna soft cotton or worsted fabric with an open meshverifiedMay 18, 2026
Etaminenouna soft cotton or worsted fabric with an open meshverifiedMay 18, 2026
Etanerceptnouna genetically engineered anti-TNF compound (trade name Enbrel) consisting of receptors that bind TNFverifiedMay 18, 2026
Etceteranounadditional unspecified odds and endsverifiedMay 18, 2026
Etchernounsomeone who etchesverifiedMay 18, 2026
Etchingnounmaking engraved or etched plates and printing designs from themverifiedMay 18, 2026
Eternal DamnationnounMWEthe state of being condemned to eternal punishment in HellverifiedMay 18, 2026
Eternal LifenounMWElife without beginning or endverifiedMay 18, 2026
Eternal RestnounMWEeuphemisms for death (based on an analogy between lying in a bed and in a tomb)verifiedMay 18, 2026
Eternal SleepnounMWEeuphemisms for death (based on an analogy between lying in a bed and in a tomb)verifiedMay 18, 2026
Eternitynouna state of eternal existence believed in some religions to characterize the afterlifeverifiedMay 18, 2026
Ethacrynic AcidnounMWEdiuretic used to treat edema, also known as EdecrinverifiedMay 18, 2026
Ethanalnouna colorless volatile water-soluble liquid aldehyde used chiefly in the manufacture of acetic acid and perfumes and drugsverifiedMay 18, 2026
Ethanal TrimernounMWEa colorless liquid (a cyclic trimer of acetaldehyde) that is used as a sedative and a solventverifiedMay 18, 2026
Ethanamidenouna colorless solid amide of acetic acid used as a solvent and in the synthesis of organic compoundsverifiedMay 18, 2026
Ethanenouna colorless odorless alkane gas used as fuelverifiedMay 18, 2026
Ethanedioic AcidnounMWEa toxic colorless crystalline organic acid found in oxalis and other plantsverifiedMay 18, 2026
Ethanediolnouna sweet but poisonous syrupy liquid used as an antifreeze and solventverifiedMay 18, 2026
Ethanoatenouna salt or ester of acetic acidverifiedMay 18, 2026
Ethanoic AcidnounMWEa colorless pungent liquid widely used in manufacturing plastics and pharmaceuticalsverifiedMay 18, 2026
Ethanolnounthe intoxicating agent in fermented and distilled liquorsverifiedMay 18, 2026
Ethanoyl ChloridenounMWEcolorless liquid acyl chloride (CH3COCl) that has a pungent odorverifiedMay 18, 2026
Ethanoyl RadicalnounMWEthe organic group of acetic acid (CH3CO-)verifiedMay 18, 2026
Ethchlorvynolnouna mild sedative-hypnotic drug (trade name Placidyl)verifiedMay 18, 2026
Ethenenouna flammable colorless gaseous alkeneverifiedMay 18, 2026
Ethernouna medium that was once supposed to fill all space and to support the propagation of electromagnetic wavesverifiedMay 18, 2026
EthernetnounA popular network protocol and cabling scheme that uses a bus topology and carrier sense multiple access/collision detection (CSMA/CD) to prevent network failures or collisions when two devices try to access the network at the same timeNetworkMay 12, 2026
Ethernet CablenounMWEany of several types of coaxial cable used in ethernetsverifiedMay 18, 2026
Ethical CodenounMWEa system of principles governing morality and acceptable conductverifiedMay 18, 2026
Ethical DrugnounMWEa drug that is available only with written instructions from a doctor or dentist to a pharmacistverifiedMay 18, 2026
Ethical MotivenounMWEmotivation based on ideas of right and wrongverifiedMay 18, 2026
Ethiciannouna philosopher who specializes in ethicsverifiedMay 18, 2026
Ethicismnouna doctrine that ethics and ethical ideas are valid and importantverifiedMay 18, 2026
Ethicistnouna philosopher who specializes in ethicsverifiedMay 18, 2026
Ethicsnounn. 1. the branch of philosophy that investigates both the content of moral judgments (i.e., what is right and what is wrong) and their nature (i.e., whether such judgments should be considered objective or subjective). The study of the first type of question is sometimes termed normative ethics and that of the second metaethics. Also called moral philosophy. 2. the principles of morally right conduct accepted by a person or a group or considered appropriate to a specific field. In psychological research, for example, proper ethics requires that participants be treated fairly and without harm and that investigators report results and findings honestly. See code of ethics; professional ethics; research ethics. —ethical adj.FrameworkMay 18, 2026
Ethics by DesignnounMWEAn approach to technology ethics and a key component of responsible innovation that aims to integrate ethics in the design and development stage of the technology. Sometimes formulated as "embedding values in design." Similar terms are "value-sensitive design" and "ethically aligned design."FrameworkMay 18, 2026
Ethics CommitteenounMWEa committee appointed to consider ethical issuesverifiedMay 18, 2026
Ethics PanelnounMWEa committee appointed to consider ethical issuesverifiedMay 18, 2026
Ethmoidnounone of the eight bones of the craniumverifiedMay 18, 2026
Ethmoid BonenounMWEone of the eight bones of the craniumverifiedMay 18, 2026
Ethmoid SinusnounMWEa sinus of the meatuses of the nasal cavity (behind the bridge of the nose)verifiedMay 18, 2026
Ethmoidal ArterynounMWEa branch of the ophthalmic artery supplying structures in and around the nasal capsuleverifiedMay 18, 2026
Ethmoidal SinusnounMWEa sinus of the meatuses of the nasal cavity (behind the bridge of the nose)verifiedMay 18, 2026
Ethmoidal VeinnounMWEveins that drain the ethmoidal sinuses and empty into the superior ophthalmic veinverifiedMay 18, 2026
Ethnarchnounthe ruler of a province, as in the Roman Empire and Byzantine Empire, or certain religious rulers with secular authorityverifiedMay 18, 2026
Ethnic CleansingnounMWEthe mass expulsion and killing of one ethnic or religious group in an area by another ethnic or religious group in that areaverifiedMay 18, 2026
Ethnic GroupnounMWEpeople of the same race or nationality who share a distinctive cultureverifiedMay 18, 2026
Ethnic JokenounMWEa joke at the expense of some ethnic groupverifiedMay 18, 2026
Ethnic MinoritynounMWEa group that has different national or cultural traditions from the majority of the populationverifiedMay 18, 2026
Ethnic MusicnounMWEthe traditional and typically anonymous music that is an expression of the life of people in a communityverifiedMay 18, 2026
Ethnic SlurnounMWEa slur on someone's race or languageverifiedMay 18, 2026
Ethnicitynounan ethnic quality or affiliation resulting from racial or cultural tiesverifiedMay 18, 2026
Ethnocentrismnounbelief in the superiority of one's own ethnic groupverifiedMay 18, 2026
Ethnographernounan anthropologist who does ethnographyverifiedMay 18, 2026
Ethnographynounthe branch of anthropology that provides scientific description of individual human societiesverifiedMay 18, 2026
Ethnologistnounan anthropologist who studies ethnologyverifiedMay 18, 2026
Ethnologynounthe branch of anthropology that deals with the division of humankind into races and with their origins and distribution and distinctive characteristicsverifiedMay 18, 2026
Ethnosnounpeople of the same race or nationality who share a distinctive cultureverifiedMay 18, 2026
Ethologistnouna zoologist who studies the behavior of animals in their natural habitatsverifiedMay 18, 2026
Ethologynounthe branch of zoology that studies the behavior of animals in their natural habitatsverifiedMay 18, 2026
Ethosnoun(anthropology) the distinctive spirit of a culture or an eraverifiedMay 18, 2026
Ethosuximidenounan anticonvulsant drug (trade names Emeside and Zarontin) used to treat petit mal epilepsyverifiedMay 18, 2026
Ethoxyethanenouna colorless volatile highly inflammable liquid formerly used as an inhalation anestheticverifiedMay 18, 2026
Ethylnounthe univalent hydrocarbon radical C2H5 derived from ethane by the removal of one hydrogen atomverifiedMay 18, 2026
Ethyl AcetatenounMWEa fragrant colorless flammable volatile liquid ester made from ethanol and acetic acidverifiedMay 18, 2026
Ethyl AlcoholnounMWEnonflavored alcohol of 95 percent or 190 proof used for blending with straight whiskies and in making gin and liqueursverifiedMay 18, 2026
Ethyl AminobenzoatenounMWEa white crystalline ester used as a local anestheticverifiedMay 18, 2026
Ethyl ChloridenounMWEa colorless flammable gas used as a local surface anestheticverifiedMay 18, 2026
Ethyl EthernounMWEa colorless volatile highly inflammable liquid formerly used as an inhalation anestheticverifiedMay 18, 2026
Ethyl GroupnounMWEthe univalent hydrocarbon radical C2H5 derived from ethane by the removal of one hydrogen atomverifiedMay 18, 2026
Ethyl RadicalnounMWEthe univalent hydrocarbon radical C2H5 derived from ethane by the removal of one hydrogen atomverifiedMay 18, 2026
Ethylenenouna flammable colorless gaseous alkeneverifiedMay 18, 2026
Ethylene GlycolnounMWEa sweet but poisonous syrupy liquid used as an antifreeze and solventverifiedMay 18, 2026
Ethylene TetrachloridenounMWEanthelmintic agent used against hookworm and other nematodesverifiedMay 18, 2026
Ethylenediaminetetraacetic AcidnounMWEa complex molecule used medically to chelate metal ions in cases of lead or heavy metal poisoningverifiedMay 18, 2026
Ethynenouna colorless flammable gas used chiefly in welding and in organic synthesisverifiedMay 18, 2026
Etiolationnoun(botany) the act of causing a plant to develop without chlorophyll by growing it without exposure to sunlightverifiedMay 18, 2026
Etiologistnouna specialist in the etiology of diseasesverifiedMay 18, 2026
Etiologynounthe philosophical study of causationverifiedMay 18, 2026
Etiquettenounrules governing socially acceptable behaviorverifiedMay 18, 2026
Etnanouna gas burner used in laboratoriesverifiedMay 18, 2026
Etodolacnouna nonsteroidal anti-inflammatory drug (trade name Lodine)verifiedMay 18, 2026
Etudenouna short composition for a solo instrumentverifiedMay 18, 2026
Etuinounsmall ornamental ladies' bag for small articlesverifiedMay 18, 2026
Etymological DictionarynounMWEa dictionary giving the historical origins of each wordverifiedMay 18, 2026
Etymologistnouna lexicographer who specializes in etymologyverifiedMay 18, 2026
Etymologizingnoun(historical linguistics) an explanation of the historical origins of a word or phraseverifiedMay 18, 2026
Etymologynounthe study of the sources and development of wordsverifiedMay 18, 2026
Etymonnouna simple form inferred as the common basis from which related words in several languages can be derived by linguistic processesverifiedMay 18, 2026
Eubacteriumnouna large group of bacteria having rigid cell wallsverifiedMay 18, 2026
Eubstancenounthe property of holding together and retaining its shapeverifiedMay 18, 2026
Eucalyptnouna tree of the genus EucalyptusverifiedMay 18, 2026
Eucalyptusnounwood of any of various eucalyptus trees valued as timberverifiedMay 18, 2026
Eucalyptus GumnounMWEreddish-brown dried gummy exudation from any of several trees of the genus Eucalyptus especially Eucalyptus camaldulensisverifiedMay 18, 2026
Eucalyptus KinonounMWEreddish-brown dried gummy exudation from any of several trees of the genus Eucalyptus especially Eucalyptus camaldulensisverifiedMay 18, 2026
Eucalyptus OilnounMWEan essential oil obtained from the leaves of eucalyptsverifiedMay 18, 2026
Eucalyptus TreenounMWEa tree of the genus EucalyptusverifiedMay 18, 2026
Eucaryotenounan organism with cells characteristic of all life forms except primitive microorganisms such as bacteriaverifiedMay 18, 2026