10-letter words containing p, o, i, r
- nonprotein — not protein
- nonreceipt — Lack of receipt; failure to receive.
- nonstriped — Not striped.
- nootropics — Plural form of nootropic.
- norrkoping — a seaport in SE Sweden.
- obpyriform — inversely pear-shaped; pear-shaped with the narrow end at the base.
- odoriphore — the group of atoms in an odorous molecule responsible for its odour
- off-pricer — a seller of off-price merchandise.
- offsprings — children or young of a particular parent or progenitor.
- old permic — a subfamily of Finnic, comprising the modern languages Udmurt and Komi, spoken in northeastern European Russia, and fragmentary attestations of an earlier language (Old Permic) dating from the 15th century.
- oleuropein — (organic compound) A complex glycoside, found in the leaves of olive and privet, that may have a beneficial effect on the immune system.
- ombrophile — a plant which survives well or flourishes in rainy conditions
- omniparity — a state of universal equality
- omniparous — producing or generating all things
- omophorion — a liturgical stole, resembling a pallium, worn by bishops.
- oophoritis — inflammation of an ovary, usually combined with an inflammation of the Fallopian tubes; ovaritis.
- operagoing — Attending opera performances.
- operations — Plural form of operation.
- operatives — Plural form of operative.
- ophiolater — a person who worships snakes
- ophiolatry — the worship of snakes.
- ophiomorph — an amphibian of the Gymnophiona order, which has no limbs
- opisometer — an instrument used to measure curved lines on a map
- opium wars — a war between Great Britain and China that began in 1839 as a conflict over the opium trade and ended in 1842 with the Chinese cession of Hong Kong to the British, the opening of five Chinese ports to foreign merchants, and the grant of other commercial and diplomatic privileges in the Treaty of Nanking.
- oppressing — to burden with cruel or unjust impositions or restraints; subject to a burdensome or harsh exercise of authority or power: a people oppressed by totalitarianism.
- oppression — the exercise of authority or power in a burdensome, cruel, or unjust manner.
- oppressive — burdensome, unjustly harsh, or tyrannical: an oppressive king; oppressive laws.
- opprobrium — the disgrace or the reproach incurred by conduct considered outrageously shameful; infamy.
- optometric — Of or pertaining to optometry.
- orange-tip — a European butterfly, Anthocharis cardamines, having whitish wings with orange-tipped forewings: family Pieridae
- orchiopexy — (surgery) The procedure to move an undescended testicle into the scrotum.
- organ pipe — one of the pipes of a pipe organ.
- ornithopod — any herbivorous dinosaur of the suborder Ornithopoda whose members usually walked erect on their hind legs.
- orographic — Of or relating to mountains, especially with regard to their position and form.
- orpharions — Plural form of orpharion.
- orthoepist — the study of correct pronunciation.
- orthopedic — of or relating to orthopedics.
- orthopneic — difficult or painful breathing except in an erect sitting or standing position.
- orthoprism — a prism which has faces parallel to its vertical axis
- orthoptics — a method of exercising the eye and its muscles in order to cure strabismus or improve vision.
- orthoptist — One who practices orthoptics.
- orthotopic — (anatomy) in the normal position.
- outpouring — outpouring.
- outpromise — to promise more than
- overimpose — to lay on or set as something to be borne, endured, obeyed, fulfilled, paid, etc.: to impose taxes.
- overpraise — to praise excessively or unduly.
- overpriced — to price excessively high; set too high a price on.
- oversimple — excessively simple
- oversimply — in an oversimple manner
- ovipositor — (in certain female insects) an organ at the end of the abdomen, by which eggs are deposited.