13-letter words containing a, g, r, o, s
- nonincreasing — not increasing.
- nonpractising — of or relating to a person who no longer observes or pursues his or her religious faith
- nonsegregated — Not segregated.
- north augusta — a city in W South Carolina.
- north sea gas — natural gas extracted from deposits beneath the North Sea
- norwegian sea — part of the Arctic Ocean, N and E of Iceland and between Greenland and Norway.
- nosogeography — the study of the geographical causes and distribution of diseases.
- ocean springs — a town in SE Mississippi.
- octogenarians — Plural form of octogenarian.
- opera glasses — small binoculars
- opisthography — the practice of writing on the front and back of a parchment or papyrus
- orange squash — an orange-flavoured drink made from fruit juice, sugar, and water
- orchard grass — a weedy grass, Dactylis glomerata, often grown for pastures.
- orchesography — a written study of dancing
- orchestrating — Present participle of orchestrate.
- organ whistle — a steam or air whistle in which the jet is forced up against the thin edge of a pipe closed at the top.
- organisations — Plural form of organisation.
- organizations — The action of organizing something.
- organoarsenic — (organic chemistry) Describing any organic compound containing a carbon to arsenic bond.
- organogenesis — Biology. the origin and development of an organ.
- organosilicon — pertaining to or noting an organic compound containing silicon, especially where attached directly to a carbon atom.
- organotropism — Physiology. the attraction of microorganisms or chemical substances to particular organs or tissues of the body.
- orgiastically — In an orgiastic fashion.
- originalities — Plural form of originality.
- orismological — relating to orismology
- orthognathous — straight-jawed; having the profile of the face vertical or nearly so; having a gnathic index below 98.
- orthogonalise — to make (vectors, functions, etc.) orthogonal.
- orthographies — Plural form of orthography.
- oscillographs — Plural form of oscillograph.
- oscillography — a device for recording the wave-forms of changing currents, voltages, or any other quantity that can be translated into electric energy, as sound waves.
- osmoregulator — Any organism that practices osmoregulation.
- ostreophagous — oyster-eating
- over-standing — overreach (def 13).
- overdiagnosed — Simple past tense and past participle of overdiagnose.
- overdiagnosis — excessive diagnosis of a disease
- overeagerness — The quality of being overeager; excessive readiness or enthusiasm.
- overlay glass — case glass.
- package store — a store selling sealed bottles or other containers of alcoholic beverages that may only be consumed off the premises.
- pangola grass — a grass, Digitaria decumbens, native to southern Africa, cultivated for hay and forage in the southeastern U.S.
- pastel orange — suntan (def 3).
- persona grata — an acceptable person, especially a diplomatic representative acceptable to the government to which he or she is accredited.
- phantasmagory — phantasmagoria.
- pharmacognosy — materia medica (def 2).
- pharyngoscope — an instrument for inspecting the pharynx.
- pharyngoscopy — an examination by means of a pharyngoscope.
- photo-sharing — the publishing of digital photographs on the internet
- phraseologist — a person who treats of or is concerned with phraseology.
- physiographic — the science of physical geography.
- pigeon breast — chicken breast.
- pine grosbeak — a large grosbeak, Pinicola enucleator, of coniferous forests of northern North America and Eurasia, the male of which has rose and gray plumage.