| psychotherapeutic | (adjective) of or relating to or practicing psychotherapy | - |
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| (adjective) emotionally purging | Synonyms: cathartic |
| psychotherapeutics | (noun) the branch of psychiatry concerned with psychological methods | Synonyms: mental hygiene, psychotherapy |
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| psychotherapist | (noun) a therapist who deals with mental and emotional disorders | Synonyms: clinical psychologist |
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| psychotherapy | (noun) the treatment of mental or emotional problems by psychological means | - |
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| (noun) the branch of psychiatry concerned with psychological methods | Synonyms: mental hygiene, psychotherapeutics |
| radiotherapist | (noun) a medical specialist who uses radioactive substances and X-rays in the treatment of disease | Synonyms: radiologist |
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| radiotherapy | (noun) (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance | Synonyms: actinotherapy, irradiation, radiation, radiation therapy |
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| rather | (adverb) to a degree (not used with a negative) | Synonyms: quite |
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| (adverb) more readily or willingly | Synonyms: preferably, sooner |
| (adverb) on the contrary | Synonyms: instead |
| (adverb) to some (great or small) extent | Synonyms: kind of, kinda, sort of |
| rutherford | (noun) a unit strength of a radioactive source equal to one million disintegrations per second | - |
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| rutherfordium | (noun) a radioactive transuranic element which has been synthesized | Synonyms: atomic number 104, element 104, Rf, unnilquadium, Unq |
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| slather | (verb) spread thickly | - |
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| slither | (verb) to pass or move unobtrusively or smoothly | Synonyms: slide |
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| slithering | (adjective) moving as on a slippery surface | Synonyms: slipping |
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| slithery | (adjective) having a slippery surface or quality | - |
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| smithereens | (noun) a collection of small fragments considered as a whole | - |
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| smoother | (noun) a power tool used for sanding wood; an endless loop of sandpaper is moved at high speed by an electric motor | Synonyms: drum sander, electric sander, sander |
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| smother | (noun) a stifling cloud of smoke | - |
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| (noun) a confused multitude of things | Synonyms: clutter, fuddle, jumble, mare's nest, muddle, welter |
| (verb) deprive of oxygen and prevent from breathing | Synonyms: asphyxiate, suffocate |
| (verb) suppress in order to conceal or hide | Synonyms: muffle, repress, stifle, strangle |
| (verb) envelop completely | Synonyms: surround |
| (verb) deprive of the oxygen necessary for combustion | Synonyms: put out |
| (verb) form an impenetrable cover over | - |
| smothered | (adjective) completely covered | - |
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| (adjective) held in check with difficulty | Synonyms: stifled, strangled, suppressed |
| smotherer | (noun) a person who stifles or smothers or suppresses | Synonyms: stifler |
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| smothering | (adjective) causing difficulty in breathing especially through lack of fresh air and presence of heat | Synonyms: choking, suffocating, suffocative |
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| souther | (noun) a wind from the south | Synonyms: south wind, southerly |
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| southerly | (adjective) from the south; used especially of wind | Synonyms: southern |
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| (adjective) situated in or oriented toward the south | Synonyms: southern |
| (noun) a wind from the south | Synonyms: south wind, souther |
| (adverb) from the south | - |
| (adverb) toward the south | Synonyms: southward, southwards |
| southern | (adjective) situated in or coming from regions of the south | - |
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| (adjective) in or characteristic of a region of the United States south of (approximately) the Mason-Dixon line | - |
| (adjective) from the south; used especially of wind | Synonyms: southerly |
| (adjective) situated in or oriented toward the south | Synonyms: southerly |
| southernism | (noun) an attitude characteristic of Southerners (especially in the US) | - |
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| (noun) a locution or pronunciation peculiar to the southern United States | - |
| southernmost | (adjective) situated farthest south | Synonyms: southmost |
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| southernness | (noun) the property of being to the south | - |
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| southernwood | (noun) shrubby European wormwood naturalized in North America; sometimes used in brewing beer | Synonyms: Artemisia abrotanum |
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| stepbrother | (noun) a brother who has only one parent in common with you | Synonyms: half-brother, half brother |
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| stepfather | (noun) the husband of your mother by a subsequent marriage | - |
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| stepmother | (noun) the wife of your father by a subsequent marriage | - |
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| sunbather | (noun) someone who basks in the sunshine in order to get a suntan | - |
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| swither | (noun) agitation resulting from active worry | Synonyms: fret, lather, stew, sweat |
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| telethermometer | (noun) a thermometer that registers the temperature at some distant point | - |
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| tether | (noun) restraint consisting of a rope (or light chain) used to restrain an animal | Synonyms: lead, leash |
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| (verb) tie with a tether | - |
| tetherball | (noun) a game with two players who use rackets to strike a ball that is tethered to the top of a pole; the object is to wrap the string around the pole | - |
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| tethered | (adjective) confined or restricted with or as if with a rope or chain | - |
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| therapeutic | (adjective) relating to or involved in therapy | Synonyms: therapeutical |
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| (adjective) tending to cure or restore to health | Synonyms: alterative, curative, healing, remedial, sanative |
| (noun) a medicine or therapy that cures disease or relieve pain | Synonyms: curative, cure, remedy |
| therapeutical | (adjective) relating to or involved in therapy | Synonyms: therapeutic |
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| therapeutically | (adverb) for therapeutic purposes | - |
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| therapeutics | (noun) branch of medicine concerned with the treatment of disease | - |
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| therapist | (noun) a person skilled in a particular type of therapy | Synonyms: healer |
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| therapsid | (noun) probably warm-blooded; considered direct ancestor of mammals | Synonyms: protomammal |
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| therapy | (noun) (medicine) the act of caring for someone (as by medication or remedial training etc.) | Synonyms: treatment |
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| there | (noun) a location other than here; that place; location, medial pronoun; demonstrative pronoun, location; quantifier: demonstrative determiner, distal; demonstrative pronoun, location; quantifier: demonstrative determiner, singular, distal | - |
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| (adverb) in or at that place or location | - |
| (adverb) to or toward that place; away from the speaker | Synonyms: thither |
| (adverb) in that matter; in that respect; on that point | - |
| thereabout | (adverb) near that place | Synonyms: thereabouts |
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| (adverb) near that time or date | Synonyms: thereabouts |
| thereabouts | (adverb) near that place | Synonyms: thereabout |
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| (adverb) near that time or date | Synonyms: thereabout |
| thereafter | (adverb) from that time on | Synonyms: thenceforth |
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| thereby | (adverb) by that means or because of that | - |
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| therefor | (adverb) (in formal usage, especially legal usage) for that or for it | - |
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| therefore | (adverb) (used to introduce a logical conclusion) from that fact or reason or as a result | Synonyms: hence, so, thence, thus |
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| (adverb) as a consequence | Synonyms: consequently |
| therefrom | (adverb) from that place or from there | Synonyms: thence |
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| (adverb) from that circumstance or source | Synonyms: thence, thereof |
| therein | (adverb) (formal) in or into that thing or place | Synonyms: in that, in this |
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| thereinafter | (adverb) in the following part of a given matter, as in a document or speech | - |
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| theremin | (noun) an electronic musical instrument; melodies can be played by moving the right hand between two rods that serve as antennas to control pitch; the left hand controls phrasing | - |
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| thereness | (noun) the state of being there--not here--in position | - |
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| (noun) real existence | - |
| thereof | (adverb) of or concerning this or that | - |
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| (adverb) from that circumstance or source | Synonyms: thence, therefrom |
| thereon | (adverb) on that | Synonyms: on it, on that |
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| thereto | (adverb) to that | Synonyms: to it, to that |
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| theretofore | (adverb) up to that time | - |
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| therewith | (adverb) with that or this or it | - |
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| therewithal | (adverb) together with all that; besides | - |
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| theridiid | (noun) spider having a comb-like row of bristles on each hind foot | Synonyms: comb-footed spider |
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| therm | (noun) a unit of heat equal to 100,000 British thermal units | - |
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| thermal | (adjective) relating to or associated with heat | Synonyms: caloric, thermic |
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| (adjective) of or relating to a hot spring | - |
| (adjective) caused by or designed to retain heat | - |
| (noun) rising current of warm air | - |
| thermalgesia | (noun) pain caused by heat | - |
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| thermally | (adverb) by means of heat or with respect to thermal properties | - |
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| thermel | (noun) a thermometer that uses thermoelectric current to measure temperature | Synonyms: electric thermometer, thermoelectric thermometer |
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| thermic | (adjective) relating to or associated with heat | Synonyms: caloric, thermal |
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| thermion | (noun) an electrically charged particle (electron or ion) emitted by a substance at a high temperature | - |
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| thermionic | (adjective) of or relating to or characteristic of thermions | - |
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| thermionics | (noun) the branch of electronics dealing with thermionic phenomena (especially thermionic vacuum tubes) | - |
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| thermistor | (noun) a semiconductor device made of materials whose resistance varies as a function of temperature; can be used to compensate for temperature variation in other components of a circuit | Synonyms: thermal resistor |
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| thermoacidophile | (noun) archaebacteria that thrive in strongly acidic environments at high temperatures | - |
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| thermocautery | (noun) cautery (destruction of tissue) by heat | - |
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| thermochemistry | (noun) the branch of chemistry that studies the relation between chemical action and the amount of heat absorbed or generated | - |
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| thermocoagulation | (noun) congealing tissue by heat (as by electric current) | - |
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| thermocompressor | (noun) An injector, ejector, steam ejector, steam injector, eductor-jet pump or thermocompressor is a type of pump. | Synonyms: eductor-jet pump, ejector, injector, steam ejector, steam injector |
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| thermocouple | (noun) a kind of thermometer consisting of two wires of different metals that are joined at both ends; one junction is at the temperature to be measured and the other is held at a fixed lower temperature; the current generated in the circuit is proportional to the temperature difference | Synonyms: thermocouple junction |
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| thermodynamic | (adjective) of or concerned with thermodynamics | Synonyms: thermodynamical |
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| thermodynamical | (adjective) of or concerned with thermodynamics | Synonyms: thermodynamic |
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| thermodynamically | (adverb) with respect to thermodynamics | - |
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| thermodynamics | (noun) the branch of physics concerned with the conversion of different forms of energy | - |
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| thermoelectric | (adjective) involving or resulting from thermoelectricity | Synonyms: thermoelectrical |
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| thermoelectrical | (adjective) involving or resulting from thermoelectricity | Synonyms: thermoelectric |
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| thermoelectricity | (noun) electricity produced by heat (as in a thermocouple) | - |
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| thermogram | (noun) a graphical record produced by a thermograph | - |
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| thermograph | (noun) a thermometer that records temperature variations on a graph as a function of time | Synonyms: thermometrograph |
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| (noun) medical instrument that uses an infrared camera to reveal temperature variations on the surface of the body | - |
| thermography | (noun) diagnostic technique using a thermograph to record the heat produced by different parts of the body; used to study blood flow and to detect tumors | - |
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| thermogravimeter | (noun) a hydrometer that includes a thermometer | Synonyms: thermohydrometer |
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| thermogravimetric | (adjective) of or relating to thermal hydrometry | Synonyms: thermohydrometric |
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| thermogravimetry | (noun) the measurement of changes in weight as a function of changes in temperature used as a technique of chemically analyzing substances | - |
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| thermohydrometer | (noun) a hydrometer that includes a thermometer | Synonyms: thermogravimeter |
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| thermohydrometric | (adjective) of or relating to thermal hydrometry | Synonyms: thermogravimetric |
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| thermojunction | (noun) a junction between two dissimilar metals across which a voltage appears | - |
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| thermolabile | (adjective) (chemistry, physics, biology) readily changed or destroyed by heat | - |
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| thermometer | (noun) measuring instrument for measuring temperature | - |
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| thermometric | (adjective) of or relating to thermometry | - |
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| thermometrograph | (noun) a thermometer that records temperature variations on a graph as a function of time | Synonyms: thermograph |
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| thermometry | (noun) the measurement of temperature | - |
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| thermonuclear | (adjective) using nuclear weapons based on fusion as distinguished from fission | - |
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| thermopile | (noun) a kind of thermometer for measuring heat radiation; consists of several thermocouple junctions in series | - |
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