12-letter words containing o, d, a, n
- noordbrabant — North Brabant
- noordholland — North Holland
- nootka sound — an inlet of the Pacific Ocean, inside Nootka Island on the W coast of Vancouver Island, SW British Columbia, Canada.
- noradrenalin — norepinephrine.
- nordkyn cape — Cape, a cape in N Norway, E of North Cape: northernmost point of the European mainland.
- normed space — any vector space on which a norm is defined.
- north dakota — a state in the N central United States. 70,665 sq. mi. (183,020 sq. km). Capital: Bismarck. Abbreviation: ND (for use with zip code), N. Dak.
- north island — the northernmost principal island of New Zealand. 44,281 sq. mi. (114,690 sq. km).
- not half bad — very good
- note of hand — promissory note.
- notice board — bulletin board for displaying public messages
- noticeboards — Plural form of noticeboard.
- noun adjunct — a noun that occurs before and modifies another noun, as toy in toy store or tour in tour group.
- now and then — occasionally
- nucleocapsid — the nucleic acid core and surrounding capsid of a virus; the basic viral structure.
- nucleosidase — any of the class of enzymes that catalyze the hydrolysis of nucleosides.
- nucleotidase — a biochemical catalyst that facilitates the process of hydrolyzing or splitting a nucleotide and turning it into a phosphate and a nucleoside
- nuevo laredo — a city in NE Mexico, on the Rio Grande opposite Laredo, Texas.
- oak-panelled — having panels that are made of oak
- oakland park — a town in S Florida.
- obdurateness — The characteristic of being obdurate; stubbornness.
- obedientiary — The holder of a monastic rank or office below that of superior.
- occidentally — In an occidental manner.
- octadecanoic — Of or pertaining to octadecanoic acid or its derivatives.
- oda nobunaga — 1534–82, Japanese general and feudal leader, who unified much of Japan under his control: assassinated
- odd-man rush — an attacking move when the defence is outnumbered by the opposing team
- odontoblasts — Plural form of odontoblast.
- odontography — a treatise regarding the teeth
- odontomatous — relating to an odontoma
- odontophobia — an unnatural dread or terror of teeth
- odontophoran — a member of the family Odontophora
- of even date — of the same or today's date
- off-islander — a temporary or seasonal resident of an island; island visitor or tourist.
- old covenant — the covenant between God and the ancient Israelites, based on the Mosaic Law.
- old prussian — a Baltic language extinct since the 17th century. Abbreviation: OPruss.
- old slavonic — Old Church Slavonic.
- old-womanish — Sometimes Offensive. having characteristics considered typical of an old woman, as excessive fussiness or timidity.
- oldfashioned — Rare spelling of old-fashioned.
- oleandomycin — a macrolide antibiotic used to treat skin infections
- omnidistance — the distance between an omnirange station and a receiver.
- on shipboard — on board a ship
- on the cadge — engaged in cadging
- on the cards — likely
- one and only — incomparable; unique
- one-man band — A one-man band is a street entertainer who wears and plays a lot of different instruments at the same time.
- onion-shaped — bulb-shaped; shaped like an onion
- online media — Acorn Online Media
- onward march — the continuing, advancing or improving movement (of situation, etc)
- open-hearted — unreserved, candid, or frank: open-hearted advice.
- opera window — a narrow, fixed window on each side of the rear passenger compartment of an automobile.