| playschool | (noun) a small informal nursery group meeting for half-day sessions | Synonyms: play group |
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| podsol | (noun) a soil that develops in temperate to cold moist climates under coniferous or heath vegetation; an organic mat over a grey leached layer | Synonyms: podsol soil, podsolic soil, podzol, podzol soil |
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| podzol | (noun) a soil that develops in temperate to cold moist climates under coniferous or heath vegetation; an organic mat over a grey leached layer | Synonyms: podsol, podsol soil, podsolic soil, podzol soil |
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| pol | (noun) a person active in party politics | Synonyms: political leader, politician, politico |
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| pool | (noun) any of various games played on a pool table having 6 pockets | Synonyms: pocket billiards |
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| (noun) an excavation that is (usually) filled with water | - |
| (noun) an association of companies for some definite purpose | Synonyms: consortium, syndicate |
| (noun) an organization of people or resources that can be shared | - |
| (noun) something resembling a pool of liquid | Synonyms: puddle |
| (noun) a small lake | Synonyms: pond |
| (noun) a small body of standing water (rainwater) or other liquid | Synonyms: puddle |
| (noun) any communal combination of funds | - |
| (noun) the combined stakes of the betters | Synonyms: kitty |
| pregnanediol | (noun) a compound found in women's urine during certain phases of the menstrual cycle and in the urine of pregnant women | - |
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| preschool | (noun) an educational institution for children too young for elementary school | - |
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| propanediol | (noun) a sweet colorless, viscous, hygroscopic liquid used as an antifreeze and in brake fluid and also as a humectant in cosmetics and personal care items although it can be absorbed through the skin with harmful effects | Synonyms: propylene glycol |
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| propanol | (noun) a clear colorless volatile liquid (alcohol) used as a solvent and antiseptic | Synonyms: propyl alcohol |
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| propranolol | (noun) the first beta blocker (trade name Inderal) used in treating hypertension and angina pectoris and essential tremor | Synonyms: Inderal |
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| protocol | (noun) code of correct conduct | - |
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| (noun) forms of ceremony and etiquette observed by diplomats and heads of state | - |
| (noun) (computer science) rules determining the format and transmission of data | Synonyms: communications protocol |
| pyrogallol | (noun) a toxic white lustrous crystalline phenol used to treat certain skin diseases and as a photographic developer | Synonyms: pyrogallic acid |
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| regosol | (noun) a type of soil consisting of unconsolidated material from freshly deposited alluvium or sand | - |
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| resorcinol | (noun) a crystalline phenol obtained from various resins; used in ointments for acne and in dandruff shampoos | - |
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| retinol | (noun) an unsaturated alcohol that occurs in marine fish-liver oils and is synthesized biologically from carotene | Synonyms: vitamin A1 |
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| salol | (noun) a white powder with a pleasant taste and odor; used to absorb light in sun tan lotions or as a preservative or an antiseptic or a coating for pills in which the medicine is intended for enteric release | Synonyms: phenyl salicylate |
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| school | (noun) a building where young people receive education | Synonyms: schoolhouse |
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| (noun) the process of being formally educated at a school | Synonyms: schooling |
| (noun) an educational institution | - |
| (noun) a large group of fish | Synonyms: shoal |
| (noun) a body of creative artists or writers or thinkers linked by a similar style or by similar teachers | - |
| (noun) an educational institution's faculty and students | - |
| (noun) the period of instruction in a school; the time period when school is in session | Synonyms: school day, schooltime |
| sol | (noun) the syllable naming the fifth (dominant) note of any musical scale in solmization | Synonyms: so, soh |
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| (noun) a colloid that has a continuous liquid phase in which a solid is suspended in a liquid | Synonyms: colloidal solution, colloidal suspension |
| spool | (noun) a winder around which thread or tape or film or other flexible materials can be wound | Synonyms: bobbin, reel |
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| sterol | (noun) any of a group of natural steroid alcohols derived from plants or animals; they are waxy insoluble substances | Synonyms: steroid alcohol |
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| stilbesterol | (noun) synthetic nonsteroid with the properties of estrogen; formerly used to treat menstrual problems but was found to be associated with vaginal cancers in the daughters of women so treated during pregnancy | Synonyms: DES, diethylstilbesterol |
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| stilbestrol | (noun) a potent estrogen used in medicine and in feed for livestock and poultry | Synonyms: DES, diethylstilbestrol, diethylstilboestrol, stilboestrol |
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| stilboestrol | (noun) a potent estrogen used in medicine and in feed for livestock and poultry | Synonyms: DES, diethylstilbestrol, diethylstilboestrol, stilbestrol |
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| stool | (noun) a simple seat without a back or arms | - |
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| (noun) a plumbing fixture for defecation and urination | Synonyms: can, commode, crapper, pot, potty, throne, toilet |
| (noun) (forestry) the stump of a tree that has been felled or headed for the production of saplings | - |
| (noun) solid excretory product evacuated from the bowels | Synonyms: BM, dejection, faecal matter, faeces, fecal matter, feces, ordure |
| symbol | (noun) something visible that by association or convention represents something else that is invisible | Synonyms: symbolic representation, symbolisation, symbolization |
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| (noun) an arbitrary sign (written or printed) that has acquired a conventional significance | - |
| tetrahydrocannabinol | (noun) psychoactive substance present in marijuana | Synonyms: THC |
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| thymol | (noun) a colorless crystalline solid used in perfume or preserving biological specimens or in embalming or medically as a fungicide or antiseptic | Synonyms: thyme camphor, thymic acid |
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| timolol | (noun) a beta blocker (trade name Blocadren) administered after heart attacks | Synonyms: Blocadren |
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| toadstool | (noun) common name for an inedible or poisonous agaric (contrasting with the edible mushroom) | - |
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| tocopherol | (noun) a fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body | Synonyms: E, vitamin E |
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| tomfool | (noun) a person who lacks good judgment | Synonyms: fool, muggins, sap, saphead |
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| tool | (noun) the means whereby some act is accomplished | Synonyms: instrument |
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| (noun) an implement used in the practice of a vocation | - |
| (noun) obscene terms for penis | Synonyms: cock, dick, pecker, prick, putz, shaft |
| (noun) a person who is controlled by others and is used to perform unpleasant or dishonest tasks for someone else | Synonyms: creature, puppet |
| tribromoethanol | (noun) an intravenous anesthetic | Synonyms: tribromoethyl alcohol |
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| viol | (noun) any of a family of bowed stringed instruments that preceded the violin family | - |
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| viosterol | (noun) a fat-soluble vitamin that prevents rickets | Synonyms: calciferol, cholecalciferol, D, ergocalciferol, vitamin D |
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| vitriol | (noun) abusive or venomous language used to express blame or censure or bitter deep-seated ill will | Synonyms: invective, vituperation |
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| (noun) (H2SO4) a highly corrosive acid made from sulfur dioxide; widely used in the chemical industry | Synonyms: oil of vitriol, sulfuric acid, sulphuric acid |
| whirlpool | (noun) a powerful circular current of water (usually the result of conflicting tides) | Synonyms: maelstrom, vortex |
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| wittol | (noun) an archaic term for a cuckold who knows about his wife's infidelity but tolerates it | - |
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| wool | (noun) outer coat of especially sheep and yaks | Synonyms: fleece |
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| (noun) a fabric made from the hair of sheep | Synonyms: woolen, woollen |
| (noun) fiber sheared from animals (such as sheep) and twisted into yarn for weaving | - |
| xylol | (noun) a colorless flammable volatile liquid hydrocarbon used as a solvent | Synonyms: xylene |
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