9-letter words containing a, l, i, o
- optimally — optimum (def 3).
- oratorial — A rarer form of oratorical.
- orbicular — like an orb; circular; ringlike; spherical; rounded.
- ordinally — of or relating to an order, as of animals or plants.
- orichalch — Alternative form of orichalcum.
- orientals — Plural form of oriental.
- orificial — (medicine) Of or relating to the orifices of the body.
- oriflamme — the red banner of St. Denis, near Paris, carried before the early kings of France as a military ensign.
- originals — Plural form of original.
- orleanais — a former province in N France. Capital: Orléans.
- orleanist — a supporter of the Orléans branch of the former French royal family and of its claim to the throne of France through descent from the younger brother of Louis XIV.
- orwellian — of, pertaining to, characteristic of, or resembling the literary work of George Orwell or the totalitarian future described in his antiutopian novel 1984 (1949).
- oscillate — to swing or move to and fro, as a pendulum does.
- osmically — with regard to smell
- ostealgia — (pathology) bone pain.
- oulujarvi — a lake in central Finland, draining through the Oulu River to the Gulf of Bothnia.
- outlawing — Present participle of outlaw.
- outlaying — an expending or spending, as of money.
- outlinear — relating to an outline
- outsailed — Simple past tense and past participle of outsail.
- ovalbumin — the principal protein of egg white.
- ovaliform — Shaped like an egg; having a figure such that any section in the direction of the shorter diameter will be circular, and any in the direction of the longer diameter will be oval.
- ovalizing — Present participle of ovalize.
- overclaim — to demand by or as by virtue of a right; demand as a right or as due: to claim an estate by inheritance.
- overhaile — to draw (a covering) over
- overplaid — a plaid pattern superimposed on another plaid
- ovulation — to produce and discharge eggs from an ovary or ovarian follicle.
- oxacillin — a semisynthetic penicillin, C 1 9 H 1 9 N 3 O 5 S, used in the treatment of serious staphylococcal infections.
- pactional — relating to an agreement or a bargain
- paesiello — Giovanni [Italian jaw-vahn-nee] /Italian dʒɔˈvɑn ni/ (Show IPA), Paisiello, Giovanni.
- paisiello — Giovanni [jaw-vahn-nee] /dʒɔˈvɑn ni/ (Show IPA), 1741–1816, Italian composer.
- paleolith — a paleolithic stone implement.
- paleozoic — noting or pertaining to an era occurring between 570 million and 230 million years ago, characterized by the advent of fish, insects, and reptiles.
- palillogy — the repetition of a phrase or word
- palmation — a palmate state or formation.
- palpation — to examine by touch, especially for the purpose of diagnosing disease or illness.
- panlogism — the doctrine that the universe is a realization or act of the logos.
- papilloma — a benign tumor of the skin or mucous membrane consisting of hypertrophied epithelial tissue, as a wart.
- papillose — full of papillae.
- papillote — a decorative curled paper placed over the end of the bone of a cutlet or chop.
- parabolic — of, relating to, or involving a parable.
- paralogia — incoherent speech or thinking
- parboiled — to boil partially or for a short time; precook.
- parhelion — a bright circular spot on a solar halo; a mock sun: usually one of two or more such spots seen on opposite sides of the sun, and often accompanied by additional luminous arcs and bands.
- parochial — of, relating to, or financially supported by one or more church parishes: parochial churches in Great Britain.
- parodical — having or of the nature of a parody.
- parvoline — any of various isomeric ptomaines found in liquid derived from decaying animal matter or bituminous coals
- passional — of, relating to, or marked by passion.
- patchouli — a plant, Pogostemon cablin, of tropical Asia, that yields a fragrant oil (patchouli oil) used in the manufacture of perfumes.
- paulownia — a Japanese tree, Paulownia tomentosa, of the bignonia family, having showy clusters of pale-violet or blue flowers blossoming in early spring.