12-letter words containing t, a, p, i, o
- pro-military — of, for, or pertaining to the army or armed forces, often as distinguished from the navy: from civilian to military life.
- probationary — the act of testing.
- problematics — problems or difficulties in a particular situation or subject
- problematize — to demonstrate to be unsettled or uncertain, or more complex than originally assumed or regarded; show to be problematic
- proboscidate — having a proboscis.
- proclamation — something that is proclaimed; a public and official announcement.
- productional — the act of producing; creation; manufacture.
- progradation — seaward growth of a beach, delta, fan, etc., by progressive deposition of sediment by rivers or shoreline processes.
- programmatic — of, relating to, consisting of, or resembling program music.
- 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.).
- promuscidate — shaped like a proboscis
- propaedeutic — pertaining to or of the nature of preliminary instruction.
- propagandist — a person involved in producing or spreading propaganda.
- prophylactic — defending or protecting from disease or infection, as a drug.
- propitiation — the act of propitiating; conciliation: the propitiation of the wrathful gods.
- propitiatory — serving or intended to propitiate.
- proportional — having due proportion; corresponding.
- propugnation — defence
- prosectorial — characteristic of a prosector
- 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.
- prothalamium — prothalamion.
- protoplasmic — Biology. (no longer in technical use) the colloidal and liquid substance of which cells are formed, excluding horny, chitinous, and other structural material; the cytoplasm and nucleus.
- prototherian — belonging or pertaining to the group Prototheria, comprising the monotremes.
- prototypical — the original or model on which something is based or formed.
- protreptical — didactic
- providential — of, relating to, or resulting from divine providence: providential care.
- provitamin a — carotene.
- psammophytic — relating to psammophytes
- psychoactive — of or relating to a substance having a profound or significant effect on mental processes: a psychoactive drug.
- psychopathic — of, relating to, or affected with psychopathy.
- pteridomania — an excessive enthusiasm for ferns
- pteroic acid — a crystalline acid found in spinach
- 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.
- 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.
- pyophthalmia — suppurative inflammation of the eye.
- pyritohedral — of or relating to a pyritohedron
- pyromagnetic — (formerly) thermomagnetic (def 1).
- radiator cap — a cap in the opening of a device for cooling an internal-combustion engine, through which coolant liquid can be added