12-letter words containing a, r, i, s, t
- 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.
- psi particle — any of a family of mesons consisting of a charmed quark and a charmed antiquark.
- psychiatrist — a physician who practices psychiatry.
- pterosaurian — a pterosaur
- quadrisected — Simple past tense and past participle of quadrisect.
- quarterlies' — occurring, done, paid, issued, etc., at the end of every quarter of a year: a quarterly report; quarterly interest.
- quarterpipes — Plural form of quarterpipe.
- quasicrystal — a form of solid matter whose atoms are arranged like those of a crystal but assume patterns that do not exactly repeat themselves.
- quasineutral — not taking part or giving assistance in a dispute or war between others: a neutral nation during World War II.
- quaternities — Plural form of quaternity.
- quitch grass — any of various grasses, especially Agropyron repens, known chiefly as troublesome weeds and characterized by creeping rootstocks that spread rapidly.
- rabbitfishes — Plural form of rabbitfish.
- rachiotomies — Plural form of rachiotomy.
- racing skate — a tubular ice skate having a long blade extending beyond the heel and toe.
- radiesthesia — the ability to sense energy forces or radiation, esp from the human body
- radiesthetic — of or relating to radiesthesia
- radioisotope — a radioactive isotope, usually artificially produced: used in physical and biological research, therapeutics, etc.
- radiophonist — a person who produces radiophonic music
- ramapithecus — a genus of extinct Miocene ape known from fossils found in India and Pakistan and formerly thought to be a possible human ancestor.
- rambunctious — difficult to control or handle; wildly boisterous: a rambunctious child.
- ranjit singh — ("Lion of the Punjab") 1780–1839, Indian maharaja: founder of the Sikh kingdom of Punjab.
- rat-infested — (of a place or vessel) that has many rats
- re-establish — to found, institute, build, or bring into being on a firm or stable basis: to establish a university; to establish a medical practice.
- re-stabilize — to make or hold stable, firm, or steadfast.
- reabsorption — resorption (def 2).
- reactiveness — tending to react.
- reactivities — the quality or condition of being reactive.
- reading list — a list of sources (recommended by a teacher or university lecturer) which provide additional or background information on a subject being studied
- reality show — A reality show is a type of television program that aims to show how ordinary people behave in everyday life, or in situations, often created by the program makers, which are intended to represent everyday life.
- reassignment — something assigned, as a particular task or duty: She completed the assignment and went on to other jobs.
- reassimilate — to take in and incorporate as one's own; absorb: He assimilated many new experiences on his European trip.
- reassumption — the act or process of reassuming something
- recalibrates — to determine, check, or rectify the graduation of (any instrument giving quantitative measurements).
- reciprocates — to give, feel, etc., in return.
- rectirostral — (of a bird) having a straight bill.
- red goatfish — a goatfish, Mullus auratus.
- redesignated — to mark or point out; indicate; show; specify.
- reestimation — judgment or opinion: In my estimation the boy is guilty.
- registerable — a book in which records of acts, events, names, etc., are kept.
- registrating — to select and combine pipe organ stops.
- registration — the act of registering.
- reichsthaler — a silver thaler of Germany, originally issued in 1566; rix-dollar.
- reillustrate — to furnish (a book, magazine, etc.) with drawings, pictures, or other artwork intended for explanation, elucidation, or adornment.
- reinstalment — a further or new instalment
- relationless — having no family relations
- relationship — a connection, association, or involvement.
- relativeness — the state or fact of being relative.
- relativistic — of or relating to relativity or relativism.
- repristinate — to restore to the first or original state or condition.
- res judicata — a thing adjudicated; a case that has been decided.