12-letter words containing a, s, u, i
- neuroplastic — Of or pertaining to neuroplasticity.
- neutral axis — an imaginary line in the cross section of a beam, shaft, or the like, along which no stresses occur.
- neutralising — Present participle of neutralise.
- neutralistic — Employing or relating to neutralism.
- new urbanism — an international movement concerned with tackling the problems associated with urban sprawl and car dependency
- nimbostratus — a cloud of a class characterized by a formless layer that is almost uniformly dark gray; a rain cloud of the layer type, of low altitude, usually below 8000 feet (2440 meters).
- nitrous acid — an acid, HNO 2 , known only in solution.
- noctambulism — somnambulism.
- noctambulist — somnambulism.
- non-residual — pertaining to or constituting a residue or remainder; remaining; leftover.
- nonambiguous — not ambiguous, clear
- noncausative — Not causative.
- noncustodial — Not having custody of one’s children after a divorce.
- nondualistic — of, relating to, or of the nature of dualism.
- noninsurance — the condition or state of not having insurance
- nonspiritual — Not spiritual.
- nonunanimous — not unanimous
- nonuniversal — Not universal.
- nonvexatious — Not vexatious.
- np-hilarious — (humour) An algorithm whose complexity is a joke, either literally, as in BogoSort, or metaphorically.
- 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
- nugatoriness — Quality of being nugatory.
- nuisance tax — a tax paid in small but frequent amounts, usually by consumers.
- numismatical — Alternative form of numismatic.
- numismatists — Plural form of numismatist.
- nuptial mass — a special mass said at a wedding.
- nuri as-said — 1888–1958, Iraqi soldier and statesman: prime minister of Iraq 14 times between 1930 and 1958: he died during a military coup
- nurse's aide — a person who assists professional nurses, as in a hospital, by performing such routine tasks as making beds and serving meals.
- nurserymaids — Plural form of nurserymaid.
- obfuscations — to confuse, bewilder, or stupefy.
- obscurantism — opposition to the increase and spread of knowledge.
- obscurantist — opposition to the increase and spread of knowledge.
- obscurations — Plural form of obscuration.
- octastichous — relating to a particular coiled distribution of leaves on the stem that is characterized by having eight leaves per coil on the stem
- old guardism — political conservatism.
- old prussian — a Baltic language extinct since the 17th century. Abbreviation: OPruss.
- oleaginously — In an oleaginous manner.
- oligophagous — (especially of insects) eating only a few types of food.
- oncornavirus — any of various RNA viruses that cause tumors in humans and other animals.
- ophiolatrous — of, relating to, or practising snake-worshipping
- ophiophagous — eating snakes.
- optoacoustic — relating to the relationship between light and sound
- orchidaceous — belonging to the plant family Orchidaceae.
- orichalceous — relating to or resembling orichalc
- osco-umbrian — a group of languages, usually classified as Italic, that contains Oscan and Umbrian.
- ostentatious — characterized by or given to pretentious or conspicuous show in an attempt to impress others: an ostentatious dresser.
- otacousticon — (now rare) An instrument to aid hearing, such as an ear trumpet or hearing aid.
- outdistanced — Simple past tense and past participle of outdistance.