12-letter words containing a, p, t, e, r, i
- drapetomania — (dated) an overwhelming urge to run away (from home, a bad situation, responsibility, etc.).
- earsplitting — ear-piercing: an earsplitting explosion.
- earth pillar — a pillar of earthy matter left by erosion of the surrounding ground.
- east prussia — a former province in NE Germany: an enclave separated from Germany by the Polish Corridor; now divided between Poland and the Russian Federation. 14,283 sq. mi. (36,993 sq. km). Capital: Königsberg.
- ectoparasite — an external parasite (opposed to endoparasite).
- elephantbird — Alternative form of elephant bird.
- emancipators — Plural form of emancipator.
- emancipatory — Of or pertaining to emancipation or to an emancipator.
- emancipatrix — A woman, girl, or any other entity treated as female who emancipates; a female emancipator.
- empire state — state of New York
- empyreumatic — relating to empyreuma
- enantiomorph — Each of two crystalline or other geometric forms that are mirror images of each other.
- enantiotropy — the possibility for stable polymorphs to exist in different states on either side of a transition-point temperature
- endoparasite — A parasite, such as a tapeworm, that lives inside its host.
- entropically — By means of or in relation to entropy.
- epanorthosis — (rhetoric) A rhetorical device or element in which a speaker or writer retracts a word that has been spoken and substitutes a stronger or more suitable word; often done for emphasis or sarcasm.
- ephemerality — (uncountable) The state or condition of being ephemeral; transience.
- epicuticular — Relating to the epicuticle.
- epigrammatic — Of the nature or in the style of an epigram; concise, clever, and amusing.
- epirrhematic — relating to epirrhema
- epistolarian — A writer of epistles.
- equiparation — the act of regarding as the same; the act of comparing
- erythropenia — A decrease in the number of erythrocytes, associated with anemia.
- ethnographic — Relating to ethnography.
- eutrophicate — (ecology, intransitive) To become eutrophic.
- evaporations — Plural form of evaporation.
- exasperating — Intensely irritating; infuriating.
- exasperation — A feeling of intense irritation or annoyance.
- exasperative — having an exasperating or irritating nature
- expatriating — Present participle of expatriate.
- expatriation — Voluntary migration from one's native land to another.
- expatriatism — The condition of being an expatriate, especially a deliberate one.
- experiential — Involving or based on experience and observation.
- experimental — (of a new invention or product) based on untested ideas or techniques and not yet established or finalized.
- explorations — Plural form of exploration.
- exprobration — the act of reproaching
- exprobrative — signifying reproach, reproachful
- expropriated — Simple past tense and past participle of expropriate.
- expropriates — Third-person singular simple present indicative form of expropriate.
- extracampine — (psychiatry, of hallucination) Beyond the possible sensory field.
- extrahepatic — Originating or occurring outside the liver.
- extropianism — Belief in, or support for, the theory of extropy.
- fermat prime — (mathematics) A prime number of the form 2^2^n + 1. Any prime number of the form 2^n+1 must be a Fermat prime. Fermat conjectured in a letter to someone or other that all numbers 2^2^n+1 are prime, having noticed that this is true for n=0,1,2,3,4. No further Fermat primes are known; several have been factorised, and several more have been proved composite without finding explicit factorisations.
- filter paper — porous paper used in filtering.
- finger paint — paint children apply with fingers
- finger-paint — a jellylike paint, used chiefly by children in painting, usually with their fingers.
- flavoprotein — an enzyme, containing riboflavin and linked chemically with a protein, active in the oxidation of foods in animal cells.
- fluorapatite — a crystalline mineral, Ca 5 (PO 4) 3 F, formed from hydroxyapatite in the presence of fluoride, that has a hardening effect on bones and teeth.
- fore-topsail — a topsail set on a foremast on a ship.
- foretopsails — Plural form of foretopsail.