12-letter words containing r, o, p, e, y
- myrmecophily — symbiosis with ants
- myrmecophyte — A plant that lives in association with a colony of ants. The degree of association varies and is assumed to be symbiotic in some cases.
- mythographer — a person who collects or records myths in writing.
- narcotherapy — an infrequently used method of treating mental disorders by intravenous injection of barbiturates.
- nephelometry — Bacteriology. an apparatus containing a series of barium chloride standards used to determine the number of bacteria in a suspension.
- nephrography — Diagnostic imaging of the kidneys.
- neuronopathy — A form of polyneuropathy caused by destruction of neurons.
- neurotypical — relating to or showing typical neurological behavior and development: She has one dyslexic and one neurotypical child.
- nonrepayable — that does not need to be or cannot be repaid
- nordkyn cape — Cape, a cape in N Norway, E of North Cape: northernmost point of the European mainland.
- northern spy — an American variety of red-striped apple that ripens in autumn or early winter.
- norway maple — a European maple, Acer platanoides, having bright-green leaves, grown as a shade tree in the U.S.
- nosey parker — a persistently nosy, prying person; busybody.
- oceanography — the branch of physical geography dealing with the ocean.
- office party — a party or informal social gathering for all the employees in a particular organization or department
- oophorectomy — the operation of removing one or both ovaries; ovariectomy.
- open primary — a direct primary election in which voters need not meet a test of party membership.
- operatically — of or relating to opera: operatic music.
- oppressively — burdensome, unjustly harsh, or tyrannical: an oppressive king; oppressive laws.
- oropharynxes — Plural form of oropharynx.
- overcapacity — capacity beyond what is normal, allowed, or desirable.
- overmultiply — to increase too much or too often
- oversimplify — make too simple
- overtime pay — a higher than normal rate of pay, for work done as overtime
- oyster plant — salsify.
- pachydermous — any of the thick-skinned, nonruminant ungulates, as the elephant, hippopotamus, and rhinoceros.
- palaeography — the study of the handwritings of the past, and often the manuscripts as well, so that they may be dated, read, etc, and may serve as historical and literary sources
- pantaloonery — foolery; humorous entertainment
- paracyanogen — a polymer of cyanogen
- parahydrogen — the form of molecular hydrogen in which the nuclei of the two hydrogen atoms contained in the molecule have spins in opposite directions.
- parity error — (storage, communications) An error discovered by the inclusion of a parity bit.
- paroemiology — the study of proverbs
- party pooper — a person who hasn't the interest or vitality to participate actively in a social party and whose mood, attitude, or personality lessens others' enjoyment; killjoy.
- party popper — party favour: explosive streamer
- peabody bird — the white-throated sparrow.
- pearl hominy — whole or ground hulled corn from which the bran and germ have been removed by bleaching the whole kernels in a lye bath (lye hominy) or by crushing and sifting (pearl hominy)
- pearl oyster — any of several marine bivalve mollusks of the family Pteriidae, some of which form pearls of great value, inhabiting waters of eastern Asia and off the coasts of Panama and Baja California.
- pectoriloquy — vocalization through the chest wall, indicating a cavity or consolidation of the lung
- pedantocracy — rule by pedants; a system of government by pedants
- penny loafer — a loafer with a slot on the vamp that can hold a coin, usually a penny.
- pentahydroxy — (of a molecule) containing five hydroxyl groups.
- pentyl group — any of the univalent, isomeric groups having the formula C 5 H 1 1 –.
- peremptorily — leaving no opportunity for denial or refusal; imperative: a peremptory command.
- perfidiously — deliberately faithless; treacherous; deceitful: a perfidious lover.
- pericynthion — the point at which a spacecraft launched from earth into a lunar orbit is nearest the moon
- perinatology — a field of medicine focusing on problems emerging during the perinatal period.
- periodically — recurring at intervals of time: periodic revivals of an interest in handicrafts.
- perionychium — the epidermis surrounding the base and sides of a fingernail or toenail.
- peritoneally — through the peritoneum
- perniciously — causing insidious harm or ruin; ruinous; injurious; hurtful: pernicious teachings; a pernicious lie.