10-letter words containing a, e, r, o, s, p
- pelycosaur — any of a group of large primitive reptiles belonging to the extinct order Pelycosauria, abundant in North America and Europe during the Permian Period, often having a tall spinal sail.
- pensionary — a pensioner.
- perforatus — a muscle that bends a digit
- periastron — the point at which the stars of a binary system are closest (opposed to apastron).
- permafrost — (in arctic or subarctic regions) perennially frozen subsoil.
- peroxidase — any of a class of oxidoreductase enzymes that catalyze the oxidation of a compound by the decomposition of hydrogen peroxide or an organic peroxide.
- person-day — a unit of measurement, especially in accountancy, based on an ideal amount of work done by one person in one working day.
- personable — of pleasing personal appearance; handsome or comely; attractive.
- personably — of pleasing personal appearance; handsome or comely; attractive.
- personalia — the accoutrements, concerns, or intimations that are personal to one
- personally — through direct contact; in person; directly: I will thank him personally.
- personalty — personal estate or property.
- persuasion — the act of persuading or seeking to persuade.
- pescadores — (used with a plural verb) Penghu.
- petrostate — a small oil-rich country in which institutions are weak and wealth and power are concentrated in the hands of a few
- planospore — a zoospore.
- plesiosaur — any marine reptile of the extinct genus Plesiosaurus, from the Jurassic and Cretaceous periods, having a small head, a long neck, four paddlelike limbs, and a short tail.
- poetastery — the work done by a poetaster
- polycrates — died 522? b.c, Greek tyrant of Samos.
- polymerase — any of several enzymes that catalyze the formation of a long-chain molecule by linking smaller molecular units, as nucleotides with nucleic acids.
- popularise — to make popular: to popularize a dance.
- poriferans — an animal phylum comprising the sponges.
- porraceous — resembling a leek, esp in colour
- portlaoise — a town in central Republic of Ireland, county town of Laois: site of a top-security prison. Pop: 12 127 (2002)
- postarrest — following an arrest, occurring after someone has been arrested
- postmarked — an official mark stamped on letters and other mail, serving as a cancellation of the postage stamp and indicating the place, date, and sometimes time of sending or receipt.
- postmaster — the official in charge of a post office.
- power base — a source of authority or influence, especially in politics, founded on support by an organized body of voters, ethnic minority, economic class, etc.: His election as governor gives him a power base for seeking the presidency.
- praepostor — a senior student at an English public school who is given authority over other students.
- praetorius — Michael (Michael Schultheiss) 1571–1621, German composer, organist, and theorist.
- precarious — dependent on circumstances beyond one's control; uncertain; unstable; insecure: a precarious livelihood.
- predacious — predatory; rapacious.
- presbyopia — farsightedness due to ciliary muscle weakness and loss of elasticity in the crystalline lens.
- pressboard — a kind of millboard or pasteboard.
- presswoman — a female reporter
- prestation — a payment in money or in services.
- prestorage — occurring before storage
- proairesis — the power of considered decision-making
- processual — a systematic series of actions directed to some end: to devise a process for homogenizing milk.
- propagates — to cause (an organism) to multiply by any process of natural reproduction from the parent stock.
- proposable — to offer or suggest (a matter, subject, case, etc.) for consideration, acceptance, or action: to propose a new method.
- prose edda — either of two old Icelandic literary works, one a collection of poems on mythical and religious subjects (or) erroneously attributed to Saemund Sigfusson (c1055–1133), the other a collection of ancient Scandinavian myths and legends, rules and theories of versification, poems, etc. (or) compiled and written in part by Snorri Sturluson (1179–1241).
- proseminar — a course conducted in the manner of a seminar for graduate students but often open to advanced undergraduates.
- proserpina — Persephone.
- proslavery — favoring slavery.
- prostrated — to cast (oneself) face down on the ground in humility, submission, or adoration.
- proteanism — readily assuming different forms or characters; extremely variable.
- proteinase — any of a group of enzymes that are capable of hydrolyzing proteins.
- protestant — any Western Christian who is not an adherent of a Catholic, Anglican, or Eastern Church.
- psammosere — a sere originating on sand or sandy soil.