10-letter words containing o, p, e, r, a
- monopteral — having the form of a monopteron.
- morse lamp — a blinker lamp for signaling in Morse code.
- most-asper — harsh; rough.
- mousetraps — Plural form of mousetrap.
- myotherapy — A form of manual medicine focusing on the diagnosis, treatment and management of musculoskeletal pain.
- nalorphine — a white, crystalline, water-soluble powder, C 1 9 H 2 1 NO 3 , used to nullify respiratory depression due to narcotics and for the diagnosis of addiction to narcotics.
- nanosphere — A nanoscale sphere.
- narcolepsy — a condition characterized by frequent and uncontrollable periods of deep sleep.
- near point — the point nearest the eye at which an object is clearly focused on the retina when accommodation of the eye is at a maximum.
- near-point — the point nearest the eye at which an object is clearly focused on the retina when accommodation of the eye is at a maximum.
- necrophage — An organism that eats dead or decaying flesh.
- necrophagy — The eating of dead or decaying animal flesh.
- nephograph — an instrument for photographing clouds
- neuropathy — any diseased condition of the nervous system.
- neuroplasm — the cytoplasm of a nerve cell.
- neuropodia — Plural form of neuropodium.
- neurospora — a genus of fast-growing orange-red fungus characterized by markings on the spores resembling axons, used widely in genetic and biochemical research
- non-repeat — to say or utter again (something already said): to repeat a word for emphasis.
- nonpareils — Plural form of nonpareil.
- nonparties — Plural form of nonparty.
- nonspeaker — a person who does not or cannot speak
- north cape — a point of land on an island at the N tip of Norway: the northernmost point of Europe.
- note-paper — writing paper, especially that used in writing notes or personal correspondence and usually less than 8½ × 11 inches (21.6 × 27.9 cm) in size.
- oleographs — Plural form of oleograph.
- omeprazole — a drug, C 17 H 19 N 3 O 3 S, that inhibits the formation of gastric acid, used in the treatment of peptic ulcers and gastroesophageal reflux disease.
- open brace — left brace
- open frame — a frame in which a bowler fails to make a strike or a spare.
- open-carry — the practice of publicly carrying a gun or other weapon that is fully or partially visible.
- opera-goer — someone who attends operas
- operagoers — Plural form of operagoer.
- operagoing — Attending opera performances.
- operatable — to work, perform, or function, as a machine does: This engine does not operate properly.
- operations — Plural form of operation.
- operatives — Plural form of operative.
- operculate — having an operculum.
- ophiolater — a person who worships snakes
- opotherapy — organotherapy.
- orange-tip — a European butterfly, Anthocharis cardamines, having whitish wings with orange-tipped forewings: family Pieridae
- organ pipe — one of the pipes of a pipe organ.
- oropendola — any of several birds of the genus Gymnostinops, related to crows and feeding primarily on fruit and nectar, noted especially for their hanging nests.
- orphanages — Plural form of orphanage.
- orthopnoea — difficult or painful breathing except in an erect sitting or standing position.
- orthoptera — Any of very many four-winged insects, of the order Orthoptera, such as grasshoppers, crickets and locusts.
- outsparkle — to sparkle more brilliantly than
- outspreads — Third-person singular simple present indicative form of outspread.
- over-happy — delighted, pleased, or glad, as over a particular thing: to be happy to see a person.
- overcanopy — to cover like a canopy
- overexpand — to expand excessively
- overlapped — to lap over (something else or each other); extend over and cover a part of; imbricate.
- overparted — (of a performer) having been cast in a role that is beyond his or her abilities