13-letter words containing a, t, o, p, r, s
- microparasite — a parasitic microorganism.
- micropayments — Plural form of micropayment.
- misanthropist — a hater of humankind.
- moderatorship — The position or office of a moderator.
- monotherapies — Plural form of monotherapy.
- moose pasture — land considered to be worthless, esp when lacking in extractable mineral deposits
- moral support — emotional assistance, encouragement
- morpho-syntax — the study of the morphological and syntactic properties of linguistic or grammatical units.
- mousetrapping — Present participle of mousetrap.
- 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.
- natural slope — the maximum angle at which soil will lie in a bank without slipping
- nephropathies — Plural form of nephropathy.
- nonabsorptive — Not absorptive.
- nonadsorptive — Not adsorptive.
- nonpractising — of or relating to a person who no longer observes or pursues his or her religious faith
- of many parts — having many different abilities
- on one's part — a portion or division of a whole that is separate or distinct; piece, fragment, fraction, or section; constituent: the rear part of the house; to glue the two parts together.
- on the parish — receiving parochial relief
- open-standard — (of computer programs, codes, etc) freely available to all users
- opentransport — (networking) (OT) A complete reimplementation of all levels of the Macintosh networking code including "Classic" AppleTalk and MacTCP. It appeared in MacOS revision 7.5.3 [or earlier? Date?].
- 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.
- 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.
- ostreophagous — oyster-eating
- overspeculate — to engage in thought or reflection; meditate (often followed by on, upon, or a clause).
- package store — a store selling sealed bottles or other containers of alcoholic beverages that may only be consumed off the premises.
- painted horse — paint (def 6).
- palaeocrystic — consisting of former glacial formation
- pantisocratic — relating to pantisocracy
- paper profits — an unrealized profit due to the appreciation of something owned but not yet sold.
- paradise lost — an epic poem (1667) by John Milton.
- parasitoidism — the feeding by certain insect larvae on host tissues such that the host remains alive until larval development is complete and then usually dies.
- parasoft corp — Distributors of the message passing system Express.
- parasyntheton — a word formed by parasynthesis; for example, kind-hearted
- parnell shout — a social occasion where each person in a group pays for his or her own entertainment or meal
- parrot's-bill — a showy, vinelike plant, Clianthus puniceus, of New Zealand, having clusters of eight white-streaked, crimson flowers.
- parsons table — a square or rectangular table, often of lightweight material, with straight legs that are square in cross section and of the same thickness as the top extending from the corners flush with the top so as to appear jointless.
- parthenopaeus — a son of Hippomenes and Atalanta, and one of the Seven against Thebes.
- parthenospore — a spore developed without fertilization.
- parthian shot — a sharp, telling remark, act, gesture, etc., made in departing.
- pass the word — If you pass the word, you tell someone something that another person has told you.
- passe-partout — something that passes everywhere or provides a universal means of passage.