15-letter words containing r, d, o, s
- nitrogen oxides — Nitrogen oxides are compounds of nitrogen and oxygen produced during combustion.
- no holds barred — to have or keep in the hand; keep fast; grasp: She held the purse in her right hand. He held the child's hand in his.
- non-adversarial — a person, group, or force that opposes or attacks; opponent; enemy; foe.
- non-compromised — unable to function optimally, especially with regard to immune response, owing to underlying disease, harmful environmental exposure, or the side effects of a course of treatment.
- non-descriptive — having the quality of describing; characterized by description: a descriptive passage in an essay.
- non-disparaging — that disparages; tending to belittle or bring reproach upon: a disparaging remark.
- non-residential — of or relating to residence or to residences: a residential requirement for a doctorate.
- non-shareholder — a holder or owner of shares, especially in a company or corporation.
- nondisciplinary — of, for, or constituting discipline; enforcing or administering discipline: disciplinary action.
- nondiscriminate — Not discriminate.
- nonstandardized — Unstandardized.
- normally-closed — Normally-closed switch contacts are in a closed state at rest.
- north highlands — a town in central California, near Sacramento.
- northeastwardly — Towards the northeast.
- northwestwardly — Towards the northwest.
- nuisance ground — a garbage dump.
- odontorhynchous — (of birds) having toothlike ridges inside the beak
- odoriferousness — The quality of being odoriferous.
- off one's guard — to keep safe from harm or danger; protect; watch over: to guard the ruler.
- olbers' paradox — the paradox that if the universe consisted of an infinite number of stars equally distributed through space, then every line of sight would come from a star and the night sky would glow uniformly, which is observationally not true.
- old man's beard — fringe tree.
- old-man's-beard — fringe tree.
- oligohydramnios — (medicine) A deficit of amniotic fluid in the amniotic sac, causing distinctive deformations of the foetus.
- oligosaccharide — any carbohydrate yielding few monosaccharides on hydrolysis, as two, three, or four.
- on the decrease — decreasing
- onward progress — progress that advances or improves (a situation, etc)
- operationalised — Simple past tense and past participle of operationalise.
- orangeman's day — the 12th of July, celebrated by Protestants in Northern Ireland to commemorate the anniversary of the Battle of the Boyne (1690)
- orangemen's day — July 12, an annual celebration in Northern Ireland and certain cities having a large Irish section, especially Liverpool, to mark both the victory of William III over James II at the Battle of the Boyne, July 1, 1690, and the Battle of Augbrim, July 12, 1690.
- ordinal numbers — Also called ordinal numeral. any of the numbers that express degree, quality, or position in a series, as first, second, and third (distinguished from cardinal number).
- ordinary seaman — a seaman insufficiently skilled to be classified as an able-bodied seaman. Abbreviation: O.D., O.S., o.s.
- ordinary shares — British. a share of common stock.
- ordnance survey — mapmaking agency
- organic disease — a disease in which there is a structural alteration (opposed to functional disease).
- organized chaos — a complex situation or process that appears chaotic while having enough order to achieve progress or goals
- ortega saavedra — (José) Daniel [haw-se dah-nyel] /hɔˈsɛ dɑˈnyɛl/ (Show IPA), born 1945, Nicaraguan political leader: president 1985–90.
- osteochondritis — inflammation of bone and cartilage.
- osteochondrosis — a disease of bone and cartilage growth centers in children that begins as a necrosis and is followed by regeneration or renewed calcification.
- outdoorsmanship — a person devoted to outdoor sports and recreational activities, as hiking, hunting, fishing, or camping.
- outside caliper — a caliper whose legs turn inward so that it can measure outside dimensions, as the diameter of a rod.
- outside forward — one of two attacking players who usually play on the far side of the field; wing.
- over one's head — the upper part of the body in humans, joined to the trunk by the neck, containing the brain, eyes, ears, nose, and mouth.
- over-advertised — to announce or praise (a product, service, etc.) in some public medium of communication in order to induce people to buy or use it: to advertise a new brand of toothpaste.
- over-distention — the act of distending or the state of being distended.
- over-structured — excessively structured or organized.
- overcompensated — to compensate or reward excessively; overpay: Some stockholders feel the executives are being overcompensated and that bonuses should be reduced.
- overcrowdedness — filled to excess; packed.
- overforwardness — the quality of being too familiar
- overrepresented — represented disproportionately or in too large a number (corresponding to the number in the population, etc)
- oyster toadfish — See under toadfish (def 1).