13-letter words containing a, p, r, o, s, i
- metamorphosis — Biology. a profound change in form from one stage to the next in the life history of an organism, as from the caterpillar to the pupa and from the pupa to the adult butterfly. Compare complete metamorphosis.
- metropolitans — Plural form of metropolitan.
- microcapsules — Plural form of microcapsule.
- microcephalus — An abnormally small head.
- micrographics — the technique of photographing written or printed pages in reduced form to produce microfilm or microfiche.
- microparasite — a parasitic microorganism.
- micropayments — Plural form of micropayment.
- microprograms — Plural form of microprogram.
- microscopical — so small as to be invisible or indistinct without the use of the microscope: microscopic organisms. Compare macroscopic.
- misanthropist — a hater of humankind.
- mispersuasion — a false or mistaken persuasion
- moderatorship — The position or office of a moderator.
- monotherapies — Plural form of monotherapy.
- mousetrapping — Present participle of mousetrap.
- musculospiral — (anatomy) Of or pertaining to the muscles, and taking a spiral course; applied especially to a large nerve of the arm.
- musicotherapy — the treatment of mental disorders with music
- myringoplasty — (surgery) The closure of the perforation of pars tensa of the tympanic membrane.
- mythographies — Plural form of mythography.
- nanoparticles — Plural form of nanoparticle.
- narcohypnosis — the use of drugs to induce hypnosis
- necrophiliacs — Plural form of necrophiliac.
- nephropathies — Plural form of nephropathy.
- non-spherical — having the form of a sphere; globular.
- nonabsorptive — Not absorptive.
- nonadsorptive — Not adsorptive.
- nonperishable — not subject to rapid deterioration or decay: A supply of nonperishable food was kept for emergencies.
- nonpractising — of or relating to a person who no longer observes or pursues his or her religious faith
- ocean springs — a town in SE Mississippi.
- on the parish — receiving parochial relief
- onus probandi — the burden of proof.
- operativeness — (uncountable) The state or quality of being operative.
- opisthobranch — any gastropod mollusk of the order Opisthobranchia, as the sea slugs, sea butterflies, and sea hares, characterized by a vestigial or absent mantle and shell and two pairs of tentacles.
- opisthography — the practice of writing on the front and back of a parchment or papyrus
- oppositionary — the action of opposing, resisting, or combating.
- ora pro nobis — a Latin invocation meaning pray for us
- orchestra pit — musicians' seating in front of stage
- orchestra-pit — a group of performers on various musical instruments, including especially stringed instruments of the viol class, clarinets and flutes, cornets and trombones, drums, and cymbals, for playing music, as symphonies, operas, popular music, or other compositions.
- organotropism — Physiology. the attraction of microorganisms or chemical substances to particular organs or tissues of the body.
- orthographies — Plural form of orthography.
- oscillographs — Plural form of oscillograph.
- oscillography — a device for recording the wave-forms of changing currents, voltages, or any other quantity that can be translated into electric energy, as sound waves.
- overappraisal — An appraisal that overvalues something.
- overemphasise — (British) alternative spelling of overemphasize.
- overemphasize — to emphasize excessively.
- overexpansion — the act or process of expanding.
- ovoviviparous — producing eggs that are hatched within the body, so that the young are born alive but without placental attachment, as certain reptiles or fishes.
- paedomorphism — the continuation of juvenile characteristics in the adult stage
- painted horse — paint (def 6).
- palaeocrystic — consisting of former glacial formation
- paleosiberian — a group of languages comprising those languages of Siberia that are not affiliated with Indo-European, Altaic, Uralic, or Eskimo-Aleut and including the Chukotian family and the unrelated language isolates Ket, Nivkh, and Yukaghir; Paleo-Asiatic.