| propoxyphene | (noun) a mildly narcotic analgesic drug (trade name Darvon) related to methadone but less addictive | Synonyms: Darvon, propoxyphene hydrochloride |
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| pseudoephedrine | (noun) poisonous crystalline alkaloid occurring with ephedrine and isomorphic with it | - |
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| pyrographer | (noun) an artist who practices pyrography | - |
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| radiographer | (noun) a person who makes radiographs | - |
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| raphe | (noun) a ridge that forms a seam between two parts | Synonyms: rhaphe |
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| rhaphe | (noun) a ridge that forms a seam between two parts | Synonyms: raphe |
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| saphead | (noun) a person who lacks good judgment | Synonyms: fool, muggins, sap, tomfool |
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| scrapheap | (noun) pile of discarded metal | - |
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| (noun) an accumulation of refuse and discarded matter | Synonyms: garbage heap, junk heap, junk pile, refuse heap, rubbish heap, trash heap, trash pile |
| sheepherder | (noun) a herder of sheep (on an open range); someone who keeps the sheep together in a flock | Synonyms: sheepman, shepherd |
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| shepherd | (noun) a herder of sheep (on an open range); someone who keeps the sheep together in a flock | Synonyms: sheepherder, sheepman |
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| (noun) a clergyman who watches over a group of people | - |
| (verb) tend as a shepherd, as of sheep or goats | - |
| (verb) watch over like a shepherd, as a teacher of her pupils | - |
| shepherdess | (noun) a woman shepherd | - |
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| sphecoid | (noun) any of various solitary wasps | Synonyms: sphecoid wasp |
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| sphenion | (noun) the anterior tip of the parietal bone | - |
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| sphenoid | (noun) butterfly-shaped bone at the base of the skull | Synonyms: os sphenoidale, sphenoid bone |
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| sphere | (noun) any spherically shaped artifact | - |
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| (noun) a particular aspect of life or activity | Synonyms: sector |
| (noun) the geographical area in which one nation is very influential | Synonyms: sphere of influence |
| (noun) the apparent surface of the imaginary sphere on which celestial bodies appear to be projected | Synonyms: celestial sphere, empyrean, firmament, heavens, vault of heaven, welkin |
| (noun) a solid figure bounded by a spherical surface (including the space it encloses) | - |
| (noun) a three-dimensional closed surface such that every point on the surface is equidistant from the center | - |
| (noun) a particular environment or walk of life | Synonyms: area, arena, domain, field, orbit |
| spheric | (adjective) having the shape of a sphere or ball | Synonyms: ball-shaped, global, globose, globular, orbicular, spherical |
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| spherical | (adjective) of or relating to spheres or resembling a sphere | - |
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| (adjective) having the shape of a sphere or ball | Synonyms: ball-shaped, global, globose, globular, orbicular, spheric |
| spherically | (adverb) in a spherical manner | - |
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| sphericalness | (noun) the roundness of a 3-dimensional object | Synonyms: globosity, globularness, rotundity, rotundness, sphericity |
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| sphericity | (noun) the roundness of a 3-dimensional object | Synonyms: globosity, globularness, rotundity, rotundness, sphericalness |
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| spherocyte | (noun) an abnormal spherical red blood cell | - |
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| spheroid | (noun) a shape that is generated by rotating an ellipse around one of its axes | Synonyms: ellipsoid of revolution |
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| spheroidal | (adjective) having the nature or shape of an ellipsoid | Synonyms: ellipsoid, ellipsoidal |
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| spherometer | (noun) a measuring instrument for measuring the curvature of a surface | - |
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| spherule | (noun) a small sphere | - |
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| stenographer | (noun) someone skilled in the transcription of speech (especially dictation) | Synonyms: amanuensis, shorthand typist |
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| stephead | (noun) a headline with the top line flush left and succeeding lines indented to the right | Synonyms: drop line, dropline, stagger head, staggered head, stepped line |
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| stratosphere | (noun) the atmospheric layer between the troposphere and the mesosphere | - |
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| strophe | (noun) one section of a lyric poem or choral ode in classical Greek drama | - |
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| swamphen | (noun) any of various small aquatic birds of the genus Gallinula distinguished from rails by a frontal shield and a resemblance to domestic hens | Synonyms: gallinule, marsh hen, water hen |
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| taphephobia | (noun) a morbid fear of being buried alive | - |
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| telegrapher | (noun) someone who transmits messages by telegraph | Synonyms: telegraph operator, telegraphist |
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| telegraphese | (noun) language characterized by terseness and ellipsis as in telegrams | - |
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| telpher | (noun) one of the conveyances (or cars) in a telpherage | Synonyms: telfer |
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| telpherage | (noun) a transportation system in which cars (telphers) are suspended from cables and operated on electricity | Synonyms: telferage |
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| thermosphere | (noun) the atmospheric layer between the mesosphere and the exosphere | - |
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| thiodiphenylamine | (noun) a compound used primarily in veterinary medicine to rid farm animals of internal parasites | Synonyms: phenothiazine |
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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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| troposphere | (noun) the lowest atmospheric layer; from 4 to 11 miles high (depending on latitude) | - |
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| typographer | (noun) one who sets written material into type | Synonyms: compositor, setter, typesetter |
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| undecipherable | (adjective) not easily deciphered | Synonyms: indecipherable, unclear, unreadable |
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| undecipherably | (adverb) in an illegible manner | Synonyms: illegibly, unreadably |
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| undeciphered | (adjective) not deciphered | - |
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| unprophetic | (adjective) not prophetic; not foreseeing correctly | - |
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| upheaval | (noun) disturbance usually in protest | Synonyms: agitation, excitement, hullabaloo, turmoil |
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| (noun) (geology) a rise of land to a higher elevation (as in the process of mountain building) | Synonyms: uplift, upthrow, upthrust |
| (noun) a state of violent disturbance and disorder (as in politics or social conditions generally) | Synonyms: Sturm und Drang, turbulence |
| (noun) a violent disturbance | Synonyms: convulsion, turmoil |
| upheave | (verb) lift forcefully from beneath | - |
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