15-letter words containing a, n, d
- nonslaveholding — Not slaveholding.
- nonstandardized — Unstandardized.
- nonwithstanding — Misspelling of notwithstanding.
- norethandrolone — An anabolic steroid.
- normally-closed — Normally-closed switch contacts are in a closed state at rest.
- north highlands — a town in central California, near Sacramento.
- north tonawanda — a city in W New York.
- northeastwardly — Towards the northeast.
- northwestwardly — Towards the northwest.
- not a dickybird — not a word; nothing
- not give a damn — If you say that someone does not give a damn about something, you are emphasizing that they do not care about it at all.
- not lift a hand — to do nothing; not even try
- notwithstanding — in spite of; without being opposed or prevented by: Notwithstanding a brilliant defense, he was found guilty. She went to the game anyway, doctor's orders notwithstanding.
- nuclear warhead — a warhead containing a fission or fusion bomb.
- nuclear-powered — powered by nuclear energy
- nuisance ground — a garbage dump.
- obedience trial — a competitive event at which a dog can progress toward a degree in obedience by demonstrating its ability to follow a prescribed series of commands.
- object distance — the distance between the lens of a camera and an object being photographed.
- obsidian dating — a method of dating obsidian artifacts or debitage by calculating how long it has taken to produce a given thickness of a hydration layer within such matter.
- obsidional coin — siege piece.
- ocean greyhound — a fast ship, esp a liner
- odd permutation — a permutation of a set of n elements, x 1 , x 2 , …, xn, which permutes the product of all differences of the form (xi – xj), where i is less than j, into the negative of the product.
- odontostomatous — having jaws that resemble teeth
- of mice and men — a novel (1937) and play (1938) by John Steinbeck.
- off one's guard — to keep safe from harm or danger; protect; watch over: to guard the ruler.
- off one's hands — for which one is no longer responsible
- oil of lavender — an essential oil distilled from lavender flowers, especially Lavandula angustifolia and L. stoechas, and used in perfumery.
- oil-based paint — any paint made with a drying oil or solvent such as linseed
- old age pension — An old age pension is a regular amount of money that people receive from the government when they have retired from work.
- old clothes man — a person who deals in second-hand clothes
- old high german — High German before 1100. Abbreviation: OHG.
- old man's beard — fringe tree.
- old-man's-beard — fringe tree.
- old-man-the-sea — (in The Arabian Nights' Entertainments) an old man who clung to the shoulders of Sindbad the Sailor for many days and nights.
- oldenbarneveldt — Johan van. 1547–1619, Dutch statesman, regarded as a founder of Dutch independence; the leading figure (from 1586) in the United Provinces of the Netherlands: executed by Maurice of Nassau
- oligodendroglia — Oligodendrocytes collectively.
- oligohydramnios — (medicine) A deficit of amniotic fluid in the amniotic sac, causing distinctive deformations of the foetus.
- omnidirectional — sending or receiving signals in all directions: an omnidirectional microphone.
- on a knife-edge — To be on a knife-edge means to be in a situation in which nobody knows what is going to happen next, or in which one thing is just as likely to happen as another.
- on a razor edge — in an extremely precarious state
- on the decrease — decreasing
- on the one hand — You use on the one hand to introduce the first of two contrasting points, facts, or ways of looking at something. It is always followed later by on the other hand or 'on the other'.
- one-dimensional — having one dimension only.
- one-night stand — a single performance in one locale, as by a touring theatrical company, before moving on to the next engagement.
- onward progress — progress that advances or improves (a situation, etc)
- open admissions — a policy of admitting applicants to an institution, especially a university, regardless of previous academic record or grades.
- open-ended loan — An open-ended loan is an extension of credit where money can be borrowed when you need it, and paid back on an ongoing basis, such as a credit card.
- open-pollinated — (of a flower) pollinated without human agency.
- operationalised — Simple past tense and past participle of operationalise.
- operationalized — Simple past tense and past participle of operationalize.