12-letter words containing o, l, e, r, a
- nonrepayable — that does not need to be or cannot be repaid
- nonrevocable — Not revocable.
- nonspherical — not spherical
- nonsteroidal — of or relating to a substance that is not a steroid but has certain similar physiological effects.
- nonuniversal — Not universal.
- nonvehicular — Not vehicular.
- noradrenalin — norepinephrine.
- normal curve — a bell-shaped curve showing a particular distribution of probability over the values of a random variable. Also called Gaussian curve, probability curve.
- normalities' — conforming to the standard or the common type; usual; not abnormal; regular; natural.
- normalizable — That can be normalized.
- norman wells — a settlement in the W Northwest Territories, in NW Canada, on the Mackenzie River: oil wells.
- normokalemia — The state of having a normal concentration of potassium in one's blood.
- normokalemic — Having a normal percentage of potassium in one's blood.
- north platte — a river flowing from N Colorado through SE Wyoming and W Nebraska into the Platte. 618 miles (995 sq. km) long.
- norway maple — a European maple, Acer platanoides, having bright-green leaves, grown as a shade tree in the U.S.
- note verbale — a diplomatic communication prepared in the third person and unsigned: less formal than a note but more formal than an aide-mémoire.
- nuclear bomb — atomic explosive
- nuevo laredo — a city in NE Mexico, on the Rio Grande opposite Laredo, Texas.
- obliterating — Present participle of obliterate.
- obliteration — the act of obliterating or the state of being obliterated.
- obliterative — Tending or serving to obliterate.
- ochlocracies — Plural form of ochlocracy.
- octahedrally — in an octahedral manner
- off-islander — a temporary or seasonal resident of an island; island visitor or tourist.
- oil terminal — a large industrial complex where oil is stored and from which oil is transported elsewhere; an oil depot
- oilseed rape — Oilseed rape is a plant with yellow flowers which is grown as a crop. Its seeds are crushed to make cooking oil.
- olallieberry — a blackberry that is a cross between the loganberry and the youngberry, cultivated in California and Oregon.
- old favorite — If you refer to something as an old favorite, you mean that it has been in existence for a long time and everyone knows it or likes it.
- olfactometer — a device for estimating the keenness of the sense of smell.
- olfactometry — The study and measurement of smells.
- oligophrenia — less than normal mental development.
- oligospermia — (medicine) Low volume of semen.
- olive branch — a branch of the olive tree as an emblem of peace.
- on the alert — fully aware and attentive; wide-awake; keen: an alert mind.
- ooze leather — leather prepared from calfskin or other skin and having a soft, velvety finish on the flesh side.
- open slather — to spread or apply thickly: to slather butter on toast.
- open trailer — any dog that barks or bays on the trail of its quarry.
- operatically — of or relating to opera: operatic music.
- operatorless — Without an operator (person who operates); fully automatic.
- oppressional — Exhibiting or relating to oppression.
- optical grep — vgrep
- optometrical — the practice or profession of examining the eyes, by means of suitable instruments or appliances, for defects in vision and eye disorders in order to prescribe corrective lenses or other appropriate treatment.
- oracle bones — animal bones used for divination
- oracularness — the state of being oracular
- oral society — a society that has not developed literacy
- oral surgery — the branch of dentistry or of surgery dealing with the surgical treatment or repair of various conditions of the mouth or jaws.
- orange lodge — a Protestant fraternal organization based mainly in Northern Ireland and Scotland with lodges throughout the English-speaking world where there are significant Irish populations
- orchestrally — In an orchestral manner.
- oregon trail — a route used during the U.S. westward migrations, especially in the period from 1840 to 1860, starting in Missouri and ending in Oregon. About 2000 miles (3200 km) long.
- organoleptic — perceived by a sense organ.