10-letter words containing o, r, a, t, e
- praetorium — (in Roman history) the headquarters or residence of a Roman official, governor or military commander
- praetorius — Michael (Michael Schultheiss) 1571–1621, German composer, organist, and theorist.
- pratincole — any of several limicoline birds of the genus Glareola, of the Eastern Hemisphere, having a short bill, long, narrow, pointed wings, and a forked tail.
- prattlebox — a person who prattles, a chatterbox
- pre-atomic — of or relating to the period of history preceding the atomic age.
- pre-format — the shape and size of a book as determined by the number of times the original sheet has been folded to form the leaves. Compare duodecimo, folio (def 2), octavo, quarto.
- preappoint — to appoint beforehand.
- precaution — a measure taken in advance to avert possible evil or to secure good results.
- precontact — prior contact
- predicator — the verbal element of a clause or sentence.
- prefrontal — anterior to, situated in, or pertaining to the anterior part of a frontal structure.
- preparator — a person who prepares a specimen, as an animal, for scientific examination or exhibition.
- prestation — a payment in money or in services.
- prestorage — occurring before storage
- pro-active — serving to prepare for, intervene in, or control an expected occurrence or situation, especially a negative or difficult one; anticipatory: proactive measures against crime.
- procaryote — any cellular organism that has no nuclear membrane, no organelles in the cytoplasm except ribosomes, and has its genetic material in the form of single continuous strands forming coils or loops, characteristic of all organisms in the kingdom Monera, as the bacteria and blue-green algae.
- proclinate — (of a part) directed or inclined forward.
- procreator — to beget or generate (offspring).
- proctodeal — a depression in the ectoderm of the anal region of a young embryo, which develops into part of the anal canal.
- proctorage — the duty of a proctor
- profitable — yielding profit; remunerative: a profitable deal.
- profligate — utterly and shamelessly immoral or dissipated; thoroughly dissolute.
- prokaryote — any cellular organism that has no nuclear membrane, no organelles in the cytoplasm except ribosomes, and has its genetic material in the form of single continuous strands forming coils or loops, characteristic of all organisms in the kingdom Monera, as the bacteria and blue-green algae.
- prolongate — to prolong.
- promethean — of or suggestive of Prometheus.
- promotable — to help or encourage to exist or flourish; further: to promote world peace.
- promulgate — to make known by open declaration; publish; proclaim formally or put into operation (a law, decree of a court, etc.).
- propagated — to cause (an organism) to multiply by any process of natural reproduction from the parent stock.
- propagates — to cause (an organism) to multiply by any process of natural reproduction from the parent stock.
- propellant — a propelling agent.
- propionate — an ester or salt of propionic acid.
- propitiate — to make favorably inclined; appease; conciliate.
- propraetor — an officer who, after having served as praetor in Rome, was sent to govern a province with praetorial authority.
- proratable — to make an arrangement on a basis of proportional distribution.
- prostrated — to cast (oneself) face down on the ground in humility, submission, or adoration.
- proteanism — readily assuming different forms or characters; extremely variable.
- protectant — a substance, as a chemical spray, that provides protection, as against insects, frost, rust, etc.; protective agent.
- 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.
- proto team — a team of workers trained to perform underground rescues
- protogenia — the first woman born after the great flood of Zeus, daughter of Deucalion and Pyrrha.
- protracted — to draw out or lengthen, especially in time; extend the duration of; prolong.
- pteranodon — a flying reptile of the extinct order Pterosauria, from the Cretaceous Period, having a wingspread of about 25 feet (8 meters).
- purgatoire — a river in SE Colorado, flowing NE to the Arkansas River. 186 miles (299 km) long.
- pyroborate — borax1 .
- pyrolysate — a product of pyrolysis
- quadcopter — A rotorcraft propelled by four rotors.
- quaternion — a group or set of four persons or things.
- quatrefoil — a leaf composed of four leaflets.
- racemation — a bunch, collection, or group