13-letter words containing o, s, i
- eta expansion — eta conversion
- ethnobotanist — A scholar or researcher in the field of ethnobotany.
- ethnocentrism — The tendency to look at the world primarily from the perspective of one's own traditional, deferred, or adoptive ethnic culture.
- ethnographies — Plural form of ethnography.
- ethnohistoric — relating to ethnohistory
- ethnolinguist — a person who studies ethnolinguistics
- ethnophaulism — An ethnic or racial slur, typically caricaturing some identifiable (often physical) feature of the group being derided. For example,
- eudaemonistic — Of or pertaining to eudaemonism.
- eugeosyncline — a geosyncline characterized by lithology typical of deep ocean environments
- eurocommunism — the policies, doctrines, and practices of Communist Parties in Western Europe in the 1970s and 1980s, esp those rejecting democratic centralism and favouring nonalignment with the Soviet Union and China
- eusporangiate — (of ferns) having each sporangium developing from a group of cells, rather than a single cell, and with no specialized dispersal of spores
- euthanisation — Alternative spelling of euthanization.
- evening stock — a plant, Matthiola incana, of the genus Matthiola, of the Mediterranean region, cultivated for its brightly coloured flowers: Brassicaceae (crucifers)
- evocativeness — The state or condition of being evocative.
- exacerbations — Plural form of exacerbation.
- exaggerations — Plural form of exaggeration.
- exasperations — Plural form of exasperation.
- exceptionless — Without exception.
- exclusionists — Plural form of exclusionist.
- excursionists — Plural form of excursionist.
- exercise book — An exercise book is a small book that students use for writing in.
- exhibitioners — Plural form of exhibitioner.
- exhibitionism — Extravagant behavior that is intended to attract attention to oneself.
- exhibitionist — A person who behaves in an extravagant way in order to attract attention.
- exhilarations — Plural form of exhilaration.
- expansionists — Plural form of expansionist.
- expeditionist — (rare) One who goes on an expedition.
- expeditiously — In an expeditious manner.
- explantations — Plural form of explantation.
- exploitations — Plural form of exploitation.
- explosiveness — The state of being explosive.
- expostulating — Present participle of expostulate.
- expostulation — (countable) The act of reasoning earnestly in order to dissuade or remonstrate.
- expressionism — A style of painting, music, or drama in which the artist or writer seeks to express emotional experience rather than impressions of the external world.
- expressionist — Of, pertaining to, or in the style of expressionism.
- extemporising — Present participle of extemporise.
- exterminators — Plural form of exterminator.
- extortionists — Plural form of extortionist.
- extraposition — placement of something outside something else
- extrasystolia — (medicine) An alteration in the rhythm of the heart due to extrasystoles.
- extrasystolic — Relating to extrasystole, the premature contraction of the heart.
- extravasation — The exudation of blood, lymph or urine from a vessel into the tissues.
- extremophiles — Plural form of extremophile.
- extroversions — Plural form of extroversion.
- facetiousness — (uncountable) The state of being facetious.
- factorisation — Alternative spelling of factorization.
- facts of life — any aspect of human existence that must be acknowledged or regarded as unalterable: Old age is a fact of life.
- fairy swallow — a variety of domestic fancy pigeon having blue-and-white plumage and heavily muffed feet
- false diamond — any of a number of semiprecious stones that resemble diamond, such as zircon and white topaz
- false horizon — a line or plane that simulates the horizon, used in altitude-measuring devices or the like.