15-letter words containing e, n, r, a, p, o
- simple fraction — a ratio of two integers.
- singapore sling — a cocktail of gin, cherry brandy, sugar, and water.
- sinorespiratory — of, relating to, or affecting the paranasal sinuses and the respiratory tract.
- southern paiute — See under Paiute (def 2).
- spanish trefoil — alfalfa.
- spare no effort — do all you can
- spark generator — an alternating-current power source with a condenser discharging across a spark gap.
- speed indicator — an instrument for counting the number of revolutions of a gasoline engine.
- spermatogenesis — the origin and development of spermatozoa.
- spheroidization — the conversion of grains into spheroids
- spiral notebook — a notebook held together by a coil of wire passed through small holes punched at the back edge of the covers and individual pages
- splanchnopleure — the double layer formed by the association of the lower layer of the lateral plate of mesoderm with the underlying entoderm, which develops into the embryonic viscera.
- sport one's oak — to shut this door as a sign one does not want visitors
- sporting chance — an even or fair opportunity for a favorable outcome in an enterprise, as winning in a game of chance or in any kind of contest: They gave the less experienced players a sporting chance by handicapping the experts.
- stretch a point — a sharp or tapering end, as of a dagger.
- subprofessional — being below professional standards: subprofessional health care.
- sulphinpyrazone — a uricosuric drug with molecular formula C23H20N2O3S, used in the treatment of chronic gout
- superexaltation — extreme or supreme exaltation; the act of superexalting; the process or condition of being superexalted
- superexcitation — the act of exciting.
- superior planet — any of the five planets whose orbits are outside the orbit of the earth, namely, the planets Mars, Jupiter, Saturn, Uranus, and Neptune.
- superordination — Logic. the relation between a universal proposition and a particular proposition of the same quality containing the same terms in the same order.
- tetrasporangium — a sporangium containing four asexual spores.
- the perigordian — the Perigordian culture
- the phanerozoic — the Phanerozoic era
- theatre company — an organization that produces theatrical performances
- thought pattern — habitual way of thinking
- tobacco planter — a tool that was formerly used by tobacco farmers to plant tobacco with
- top dead center — Top dead center is the position of an engine's piston when it is at the very top of its stroke.
- top dead-centre — the position of the crank of a reciprocating engine or pump when the piston is at the top of its stroke
- trainspotterish — obsessed with trivial details, esp of a subject generally considered uninteresting
- transportedness — the quality or state of being carried away with pleasure or rapture
- trifluoperazine — a compound, C 21 H 24 F 3 N 3 S, used as an antipsychotic.
- una corda pedal — soft pedal (def 1).
- unary operation — an operation in a mathematical system by which one element is used to yield a single result, as squaring or taking the square root.
- unchoreographed — not choreographed; not pre-arranged or pre-prepared; unplanned
- uncomplementary — forming a complement; completing.
- uncomplimentary — of the nature of, conveying, or expressing a compliment, often one that is politely flattering: a complimentary remark.
- uncompromisable — that cannot or should not be compromised
- uncooperatively — in an uncooperative or unhelpful manner
- uncopyrightable — not able to be copyrighted
- undercompensate — to compensate or pay less than is fair, customary, or expected.
- underpopulation — having a population lower than is normal or desirable.
- unleaded petrol — petrol containing a reduced amount of tetraethyl lead
- unpronounceable — to enunciate or articulate (sounds, words, sentences, etc.).
- unproportionate — proportioned; being in due proportion; proportional.
- unprotestantize — to make something (e.g. a church, country, etc) a religion other than Protestant
- unsportsmanlike — a man who engages in sports, especially in some open-air sport, as hunting, fishing, racing, etc.
- upper arlington — a city in central Ohio, near Columbus.
- upperclasswoman — An upperclasswoman is a junior or senior student in a high school, college, or university.
- vernier compass — a compass on a transit (vernier transit) having a vernier for adjusting magnetic bearings to read as true bearings.