16-letter words containing r, d, a
- non-standardized — to bring to or make of an established standard size, weight, quality, strength, or the like: to standardize manufactured parts.
- nonbiodegradable — Not biodegradable.
- noncontradiction — absence or lack of contradiction.
- nondiscretionary — subject or left to one's own discretion.
- nondurable goods — goods that remain usable for, or must be replaced within, a relatively short period of time, as food, apparel, or fabrics
- norodom sihanouk — Prince Norodom [nawr-uh-dom,, -duh m] /ˈnɔr əˌdɒm,, -dəm/ (Show IPA), 1922–2004, Cambodian statesman: premier 1952–60; chief of state 1960–70 and 1975–76.
- north battleford — a city in W central Saskatchewan, in central Canada.
- north lauderdale — a city in SE Florida.
- north plainfield — a city in NE New Jersey.
- northern ireland — a political division of the United Kingdom, in the NE part of the island of Ireland. 5238 sq. mi. (13,565 sq. km). Capital: Belfast.
- norwegian buhund — a slightly-built medium-sized dog of a breed with erect pointed ears and a short thick tail carried curled over its back
- not worth a damn — worthless
- nuclear industry — the industry involving nuclear weapons, nuclear power stations, etc
- nuclear medicine — diagnostic and therapeutic medical techniques using radionuclides or radioisotopes.
- numbered account — a bank account whose owner is identified by a number for the purpose of preserving anonymity.
- nusslein-volhard — Christiane [kris-tee-ah-nuh,, kris-tyah-] /ˌkrɪs tiˈɑ nə,, krɪsˈtyɑ-/ (Show IPA), born 1942, German biologist: Nobel prize 1995.
- objective danger — a danger, such as a stone fall or avalanche, to which climbing skill is irrelevant
- observation deck — an area on a high building that is surrounded with railings or fencing and which provides panoramic views
- observation ward — a ward in a hospital where patients are monitored
- ocellated turkey — a wild turkey, Agriocharis ocellata, of Yucatán, Belize, and Guatemala, typically having green, blue, reddish-brown, and yellowish-brown plumage of a metallic luster and eyelike spots on the tail.
- odds are against — If you say that the odds are against something or someone, you mean that they are unlikely to succeed.
- of it own accord — If something happens of its own accord, it seems to happen by itself, without anyone making it happen.
- off off broadway — experimental or avant-garde drama produced in New York City, in small theaters, halls, churches, etc.
- off-off-broadway — experimental or avant-garde drama produced in New York City, in small theaters, halls, churches, etc.
- off-road vehicle — An off-road vehicle is a vehicle that is designed to travel over rough ground.
- oligodendroglial — Of or pertaining to the oligodendroglia.
- oligosaccharides — Plural form of oligosaccharide.
- on a world scale — in a way that involves the whole world
- on her beam-ends — (of a vessel) heeled over through an angle of 90°
- on the breadline — impoverished; living at subsistence level
- on the downgrade — waning in importance, popularity, health, etc
- onboard computer — onboard a vehicle, ship, plane, train or spacecraft
- once and for all — former; having at one time been: the once and future king.
- one for the road — a long, narrow stretch with a smoothed or paved surface, made for traveling by motor vehicle, carriage, etc., between two or more points; street or highway.
- one-armed bandit — slot machine (def 1).
- operating budget — money allocated to a project
- orange marmalade — preserve made from oranges
- orange men'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.
- order of the day — the agenda for an assembly, meeting, group, or organization.
- ordinary jubilee — the celebration of any of certain anniversaries, as the twenty-fifth (silver jubilee) fiftieth (golden jubilee) or sixtieth or seventy-fifth (diamond jubilee)
- ordnance factory — a factory that makes military weapons and ammunition
- organized labour — labour carried out by workers in trade unions, or the workers themselves
- oriental emerald — a green variety of corundum used as a gemstone
- orographic cloud — any cloud whose existence and form are largely controlled by the disturbed flow of air over and around mountains, as the banner cloud and crest cloud.
- orthodox judaism — Judaism as observed by Orthodox Jews.
- orthodoxy sunday — a solemn festival held on the first Sunday of Lent (Orthodoxy Sunday) commemorating the restoration of the use of icons in the church (a.d. 842) and the triumph over all heresies.
- orthoformic acid — a hypothetical acid, HC(OH) 3 , known only in the form of its esters.
- outboard profile — an exterior side elevation of a vessel, showing all deck structures, rigging, fittings, etc.
- overdramatically — In an overdramatic manner.
- overhead railway — elevated railroad.