12-letter words containing o, n, p, a, i
- progymnasium — (in Europe) a school that prepares pupils for secondary education (the gymnasium)
- prolog-linda — 1. Prolog extended with Linda-style parallelism. Proc 4th Australian Conf on Artif Intell. 2. Neil MacDonald, U Edinburgh 1989. Another Prolog extended with Linda, implemented on a Computing Surface.
- prolongation — the act of prolonging: the prolongation of a line.
- promethazine — a phenothiaxine derivative, C 1 7 H 2 0 N 2 S, used for the symptomatic relief of allergies and in the management of motion sickness.
- promulgation — to make known by open declaration; publish; proclaim formally or put into operation (a law, decree of a court, etc.).
- proofreading — correction of text
- propagandism — the art, system, or use of propaganda
- propagandist — a person involved in producing or spreading propaganda.
- propagandize — to propagate or publicize (principles, dogma, etc.) by means of propaganda.
- propanedioic — malonic.
- propitiation — the act of propitiating; conciliation: the propitiation of the wrathful gods.
- proportional — having due proportion; corresponding.
- propugnation — defence
- prostacyclin — a prostaglandin, C 2 0 H 3 2 O 5 , that specifically inhibits the formation of blood clots.
- protactinium — a radioactive, metallic element. Symbol: Pa; atomic number: 91.
- protein-coat — the coiled or polyhedral structure, composed of proteins, that encloses the nucleic acid of a virus.
- protestation — the act of protesting or affirming.
- prothalamion — a song or poem written to celebrate a marriage.
- prototherian — belonging or pertaining to the group Prototheria, comprising the monotremes.
- providential — of, relating to, or resulting from divine providence: providential care.
- provincially — belonging or peculiar to some particular province; local: the provincial newspaper.
- provisionary — providing or serving for the time being only; existing only until permanently or properly replaced; temporary: a provisional government.
- provitamin a — carotene.
- pseudoanemia — Pathology. a quantitative deficiency of the hemoglobin, often accompanied by a reduced number of red blood cells and causing pallor, weakness, and breathlessness.
- pteridomania — an excessive enthusiasm for ferns
- pterosaurian — a pterosaur
- puerto rican — an island in the central West Indies: a commonwealth associated with the U.S. 3435 sq. mi. (8895 sq. km). Capital: San Juan. Abbreviation: P.R., PR.
- pugnaciously — inclined to quarrel or fight readily; quarrelsome; belligerent; combative.
- pulling boat — a boat propelled by oars alone.
- punctulation — the state of being punctulate
- puncturation — the act of puncturing
- punditocracy — influential media pundits collectively.
- purification — to make pure; free from anything that debases, pollutes, adulterates, or contaminates: to purify metals.
- putrefaction — the act or process of putrefying; the anaerobic decomposition of organic matter by bacteria and fungi that results in obnoxiously odorous products; rotting.
- pyridoxamine — a metabolic form of pyridoxine
- pyromagnetic — (formerly) thermomagnetic (def 1).
- pyromaniacal — a compulsion to set things on fire.
- quadraphonic — of, noting, or pertaining to the recording and reproduction of sound over four separate transmission or direct reproduction channels instead of the customary two of the stereo system: a quadraphonic recording.
- quadriphonic — quadraphonic.
- quadrophonic — Alternative spelling of quadraphonic.
- radiophonist — a person who produces radiophonic music
- railroad pen — a ruling pen for drawing two parallel lines.
- ranging pole — a pole for marking positions in surveying
- re-apportion — to apportion or distribute anew.
- reabsorption — resorption (def 2).
- readaptation — the act of adapting.
- reaping hook — a curved cutting tool with a sharp edge, used in the cutting or harvesting of crops
- reassumption — the act or process of reassuming something
- recuperation — to recover from sickness or exhaustion; regain health or strength.
- relationship — a connection, association, or involvement.