12-letter words containing p, r, o, t, a
- 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.
- prostacyclin — a prostaglandin, C 2 0 H 3 2 O 5 , that specifically inhibits the formation of blood clots.
- prostanthera — any bush of the Australian genus Prostanthera, with red or white flowers and strongly scented leaves
- protactinium — a radioactive, metallic element. Symbol: Pa; atomic number: 91.
- protectorate — the relation of a strong state toward a weaker state or territory that it protects and partly controls.
- protein-coat — the coiled or polyhedral structure, composed of proteins, that encloses the nucleic acid of a virus.
- proteoglycan — a macromolecule composed of a polysaccharide joined to a polypeptide and forming the ground substance of connective tissue.
- protest flag — a flag hoisted by a racing yacht to advise the judges of a violation of the rules by another yacht.
- protestation — the act of protesting or affirming.
- prothalamion — a song or poem written to celebrate a marriage.
- prothalamium — prothalamion.
- prothonotary — a chief clerk or official in certain courts of law.
- 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
- protuberance — the condition, state, or quality of being protuberant.
- protuberancy — protuberance.
- proudhearted — full of pride.
- providential — of, relating to, or resulting from divine providence: providential care.
- provitamin a — carotene.
- pseudomartyr — someone falsely or inaccurately called a martyr
- pteridomania — an excessive enthusiasm for ferns
- pterocarpous — having winged fruit.
- 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.
- 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.
- put years on — to make (someone) feel or look much older
- putrefaction — the act or process of putrefying; the anaerobic decomposition of organic matter by bacteria and fungi that results in obnoxiously odorous products; rotting.
- pyloroplasty — the surgical alteration of the pylorus, usually a widening to facilitate the passage of food from the stomach to the duodenum.
- pyritohedral — of or relating to a pyritohedron
- pyrocatechol — catechol.
- pyromagnetic — (formerly) thermomagnetic (def 1).
- pyrosulphate — any salt of pyrosulphuric acid
- pyrotartrate — a salt derived from pyrotartaric acid
- quarter-hoop — a hoop, especially of steel, fastened around a cask between the bilge and the chime.
- radiator cap — a cap in the opening of a device for cooling an internal-combustion engine, through which coolant liquid can be added
- radioisotope — a radioactive isotope, usually artificially produced: used in physical and biological research, therapeutics, etc.
- radiophonist — a person who produces radiophonic music
- radiotherapy — treatment of disease by means of x-rays or of radioactive substances.
- re-apportion — to apportion or distribute anew.
- reabsorption — resorption (def 2).
- readaptation — the act of adapting.
- reassumption — the act or process of reassuming something
- reciprocated — to give, feel, etc., in return.
- reciprocates — to give, feel, etc., in return.
- reciprocator — to give, feel, etc., in return.