12-letter words containing t, u, r, b, o
- natural-born — native-born.
- neoytterbium — ytterbium.
- neutron bomb — a nuclear bomb designed to release radiation consisting mainly of neutrons, thus causing extensive loss of life but relatively little damage to buildings and property and only brief radioactive contamination.
- 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).
- nonturbulent — Not turbulent.
- northborough — a town in central Massachusetts.
- northumbrian — of or relating to Northumbria, Northumberland, or the inhabitants or dialect of either.
- not-a-number — (mathematics) (NaN) An IEEE floating point representation for the result of a numerical operation which cannot return a valid number value. A NaN can result from multiplying an infinity by a zero, or from subtracting one infinity from another [what else?]. NaN is encoded as a special bit pattern [what pattern?] which would otherwise represent a floating-point number. It is used to signal error returns where other mechanisms are not convenient, e.g. a hardware floating-point unit and to allow errors to propagate through a calculation. Similar bit patterns represent positive and negative overflow and underflow and the positive and negative infinities resulting from division by zero.
- obdurateness — The characteristic of being obdurate; stubbornness.
- objet trouve — found object.
- obreptitious — having the characteristics of acquiring something by deceitful means
- obscurantism — opposition to the increase and spread of knowledge.
- obscurantist — opposition to the increase and spread of knowledge.
- obscurations — Plural form of obscuration.
- obstreperous — resisting control or restraint in a difficult manner; unruly.
- obstructions — Plural form of obstruction.
- orbicularity — The quality of being orbicular.
- outnumbering — Present participle of outnumber.
- over-trouble — to disturb the mental calm and contentment of; worry; distress; agitate.
- overabundant — an excessive amount or abundance; surfeit: an overabundance of sugar in the diet.
- oversubtlety — the quality of being too subtle
- pearl button — a button (as for fastening a shirt, blouse, etc) made of pearl or mother-of-pearl
- perambulator — baby carriage.
- perturbation — the act of perturbing.
- peterborough — a city in Cambridgeshire, in central England.
- petrobrusian — a member of a 12th-century sect in S France that rejected the Mass, infant baptism, prayers for the dead, sacerdotalism, the veneration of the cross, and the building of churches.
- petrobutanol — butyl alcohol.
- picture book — a book consisting mainly or entirely of pictures, especially one for children who have not yet learned to read.
- pilot burner — pilot light (def 1).
- pork butcher — a butcher who specializes in pork
- post-puberty — the period or age at which a person is first capable of sexual reproduction of offspring: in common law, presumed to be 14 years in the male and 12 years in the female.
- press button — a button on a phone dial which you press
- probouleutic — relating to the Athenian council, which discussed matters before submitting them to the general assembly
- prosecutable — Law. to institute legal proceedings against (a person). to seek to enforce or obtain by legal process. to conduct criminal proceedings in court against.
- protuberance — the condition, state, or quality of being protuberant.
- protuberancy — protuberance.
- rambunctious — difficult to control or handle; wildly boisterous: a rambunctious child.
- redoublement — the act of redoubling
- reset button — control that restores a default setting
- rock bunting — a seed-eating songbird, Emberiza cia
- roundaboutly — in a roundabout manner
- rubber boots — wellingtons: footwear worn in rain
- ryobu shinto — a fusion of Shinto and Buddhism, which flourished in Japan in the 13th century
- scrobiculate — furrowed or pitted.
- software bus — A support environment for heterogeneous distributed processing, such as the ANSA Testbench.
- soul brother — a black male, especially a fellow black male.
- south arabia — Protectorate of, a former protectorate of Great Britain in S Arabia, now part of the Republic of Yemen.
- stirrup bone — the stapes, one of the three bones of the middle ear
- stone bruise — a bruise on the sole of the foot, caused by walking on or striking against a small stone or other hard object.
- storage tube — an electron tube in which information is stored as charges for a predetermined time