GC: n S: http://www.geo.mtu.edu/UPSeis/locating.html (last access: 29 July 2015); http://study.com/academy/lesson/what-is-the-epicenter-of-an-earthquake-definition-location.html (last access: 29 July 2015). N: 1. 1887 in seismology, «point on the earth’s surface directly above the center or focus of an earthquake,» from Modern Latin epicentrum (1879 in geological use); see epi- + center (n.). Related: Epicentral (1866).

GC: n S: WHO – http://www.who.int/csr/en/ (last access: 22 January 2013); MN – http://www.medicinenet.com/script/main/art.asp?articlekey=3273 (last access: 6 September 2015). N: 1. epidemic (n.): 1757, «an epidemic disease, a temporary prevalence of a disease throughout a community,» from epidemic (adj.); earlier epideme (see epidemy). An Old English noun for this (persisting in

GC: n S: WHO – http://www.who.int/topics/epidemiology/en/ (last access: 20 November 2014); EncBrit – http://global.britannica.com/EBchecked/topic/189810/epidemiology (last access: 26 November 2014). N: 1. «study of epidemics, science of epidemic diseases,» 1850, from Greek epidemios, literally «among the people, of one’s countrymen at home» + –logy. epidemic (n): 1757, «an epidemic disease, a

GC: n S: NCBI – https://www.ncbi.nlm.nih.gov/books/NBK542219/ (last access: 5 October 2022); MEDLP – https://medlineplus.gov/ency/article/007413.htm (last access: 5 October 2022). N: 1. – epidural (adj): 1873, «situated on or affecting the dura mater,» from epi- «on» + dura mater + -al. The noun meaning «injection into the epidural region» (usually given

GC: n S: ILAE – http://www.ilae.org/Visitors/Centre/documents/Definition2014-RFisher.pdf (last access: 15 December 2016); NINDS – http://www.ninds.nih.gov/disorders/epilepsy/epilepsy.htm (last access: 15 December 2016). N: 1. From 1570s, from Middle French epilepsie(16c.), from Late Latin epilepsia, from Greek epilepsis “epilepsy,” literally a seizure, from epilambanein “to lay hold of, seize upon, attack”, especially of diseases,

GC: n S: NHS – https://www.royalberkshire.nhs.uk/patient-information-leaflets/AandE%20Epistaxis.htm (last access: 14 November 2020); NCBI – https://www.ncbi.nlm.nih.gov/books/NBK435997/ (last access: 14 November 2020). N: 1. «nosebleed,» 1793, medical Latin, as if from Greek *epistaxis, a false reading for epistagmos, from epi «upon» + stazein «to let fall in drops». 2. Nosebleed, also called Epistaxis, an attack of bleeding

GC: n S: SDir – https://bit.ly/2sJKnl2 (last access: 13 May 2019); MEDLP – https://bit.ly/2JhTmBG (last access: 13 May 2019). N: 1. – epithelial (adj): From «epithelium» (1748, Modern Latin -Frederick Ruysch-, from Greek epi «upon» + thēlē «teat, nipple,» from suffixed form of PIE root *dhe(i)- «to suck.» Related: Epithelial)

GC: n S: SDir – https://bit.ly/2HiPVdl (last access: 13 May 2019); MEDLP – https://bit.ly/2Vka9Zc (last access: 13 May 2019). N: 1. 1748, Modern Latin (Frederick Ruysch), from Greek epi «upon» + thēlē «teat, nipple,» from suffixed form of PIE root *dhe(i)- «to suck.» Related: Epithelial. 2. Morphology and General Physiology

GC: adj, n S: CDC – http://www.cdc.gov/ncidod/dvbid/westnile/resources/wnv-guidelines-apr-2001.pdf (p. 5) (last access: 22 January 2013); Mednet – http://www.medicinenet.com/script/main/art.asp?articlekey=14877 (last access: 6 September 2015). N: 1. epizootic (n.): animal equivalent of epidemic, 1748, from French épizootique, from épizootie, irregularly formed from Greek epi (see epi-) + zoon (see zoo-). 2. French épizootique,

GC: n S: http://www.epoxy-europe.eu/uploads/Modules/Resources/epoxy_erc_bpa_whitepapers_summarypaper.pdf (last access: 27 August 2016); https://plastics.americanchemistry.com/Product-Groups-and-Stats/PolycarbonateBPA-Global-Group/About-BPA-Epoxy-Resins.pdf (last access: 27 August 2016). N: 1. epoxy (n): 1916, in reference to certain chemical compounds, from epi- + first element of oxygen. Epoxy- is used as a prefix in chemistry to indicate an oxygen atom that is linked to

GC: n S: EZA – http://www.eza.org/fileadmin/system/pdf/2007_12_Elewijt_en.pdf (last access: 22 April 2013); EOC – http://www.eoc.wa.gov.au/AboutUs/TheEqualOpportuntiyAct.aspx (last access 3 September 2014). N: 1. – equal (adj): Late 14c., «identical in amount, extent, or portion;» early 15c., «even or smooth of surface,» from Latin aequalis «uniform, identical, equal,» from aequus «level, even, flat;

GC: n S: WHO – http://www.who.int/features/factfiles/polio/en/ (last access: 21 November 2013); http://www.who.int/dracunculiasis/eradication/en/ (last access: 11 October 2015). N: 1. early 15c., from Latin eradicationem (nominative eradicatio), noun of action from past participle stem of eradicare «root out, extirpate, annihilate,» from ex- «out» (see ex-) + radix (genitive radicis) «root» (see

GC: n S: NatGeo – https://education.nationalgeographic.org/resource/erosion/ (last access: 10 January 2024); FAO – https://www.fao.org/3/ca5582en/CA5582EN.pdf (last access: 10 January 2024). N: 1. 1540s, from French erosion (16c.), from Latin erosionem (nominative erosio) «a gnawing away,» noun of action from past-participle stem of erodere «to gnaw away, consume,» from assimilated form of ex «away»

GC: n S: NatGeo – https://www.nationalgeographic.com/environment/article/volcanoes# (last access: 10 January 2024); IFRC – https://www.ifrc.org/our-work/disasters-climate-and-crises/what-disaster/volcanic-eruptions (last access: 28 December 2023). N: 1. Early 15c., erupcioun, from Old French éruption (14c.) and directly from Latin eruptionem (nominative eruptio) «a breaking out», noun of action from past-participle stem of erumpere «break out, burst forth,» from assimilated

GC: n S: http://emedicine.medscape.com/article/1052445-treatment (last access: 11 October 2015); http://www.healthline.com/health/erysipelas#Overview1 (last access: 11 October 2015); DORLAND p. 642. N: 1. late 14c., skin disease also known as St. Anthony’s Fire, from Greek erysipelas, perhaps from erythros «red», see red (1) + pella «skin», see film (n.). 2. Contagious infection of

GC: n S: DORLAND; OD – http://www.oxforddictionaries.com/es/definicion/ingles/erythroblastosis (last access: 1 April 2015); http://www.collinsdictionary.com/dictionary/english/erythroblastosis (last access: 1 April 2015). N: 1. First use: about 1923. Origin: New Latin. New Latin erythroblastōsis fētālis : erythroblastōsis, erythroblastosis + fētālis, fetal. From erythro- (before vowels, erythr-, word-forming element meaning «red,» from Greek erythro-, comb.

GC: n S: http://www.healthline.com/health/erythroblastosis-fetalis#Overview1 (last access: 1 April 2015); DORLAND p. 79. N: 1. erythroblastosis (n): First use: about 1923. Origin: New Latin. New Latin erythroblastōsis fētālis : erythroblastōsis, erythroblastosis + fētālis, fetal. From erythro- (before vowels, erythr-, word-forming element meaning «red,» from Greek erythro-, comb. form of erythros «red»

See red blood cell

GC: n S: RD – http://www.rightdiagnosis.com/medical/erythrocytopenia.htm (last access: 28 December 2015); NCBI – http://www.ncbi.nlm.nih.gov/pubmed/16091591 (last access: 28 December 2015). N: 1. From Greek erythros, red, kytos, cell, penes, poor. 2. Deficiency in the number of erythrocytes. 3. The term «erythrocytopenia» was recommended by the Medical Signs and Symptoms Committee. S: 1. http://medical-dictionary.thefreedictionary.com/erythrocytopenia

GC: n S: NHS – https://www.nhs.uk/conditions/erythromelalgia/ (last access: 8 December 2024); CC – https://my.clevelandclinic.org/health/diseases/22752-erythromelalgia (last access: 8 December 2024). N: 1. The etymology of its name comes from the Greek: erythros «red», melos «limb» and algos «pain». 2. Also known as: erythermalgia, erythralgia. erythromelalgia, rare disease in which the blood

GC: n S: MN – http://www.medicinenet.com/script/main/art.asp?articlekey=12234 (last access: 1 April 2015); NCBI – https://pubmed.ncbi.nlm.nih.gov/11914454/ (last access: 8 February 2021). N: 1. New Latin, from «erythro-» (before vowels, erythr-, word-forming element meaning «red,» from Greek erythro-, comb. form of erythros «red» -in Homer, also the color of copper and gold-) and

GC: n S: CC (last access: 10 November 2025); Nature (last access: 10 November 2025). N: 1. erythropoiesis is a borrowing from Greek, combined with an English element. Etymons: erythro- comb. form, Greek ποίησις. The earliest known use of the noun erythropoiesis is in the 1910s. OED’s earliest evidence for

GC: n S: CC (last access: 9 November 2025); NCBI (last access: 9 November 2025). N: 1. From Ancient Greek ἐρυθρός (eruthrós, “red”) and ποιητής (poiētḗs, “creator, maker”) and -in. The first known use of erythropoietin was in 1948. a glycoprotein hormone formed especially in the kidney and stimulating red

See Escherichia coli