15-letter words starting with su
- sulphur dioxide — a colourless soluble pungent gas produced by burning sulphur. It is both an oxidizing and a reducing agent and is used in the manufacture of sulphuric acid, the preservation of a wide range of foodstuffs (E220), bleaching, and disinfecting. Formula: SO2
- sulphur springs — a town in NE Texas.
- sulphurous acid — an unstable acid produced when sulphur dioxide dissolves in water: used as a preservative for food and a bleaching agent. Formula: H2SO3
- sumatra camphor — borneol.
- summa cum laude — with highest praise: used in diplomas to grant the highest of three special honors for grades above the average.
- summary offence — an offence that is triable in a magistrates' court
- summer diarrhea — an acute condition of diarrhea, occurring during the hot summer months chiefly in infants and children, caused by bacterial contamination of food and associated with poor hygiene.
- summer flounder — a flounder, Paralichthys dentatus, inhabiting shallow waters from Cape Cod to South Carolina, valued as food.
- summer holidays — the time when children do not go to school in the summer
- summer solstice — the solstice on or about June 21st that marks the beginning of summer in the Northern Hemisphere.
- summer triangle — a group of three first-magnitude stars (Deneb, Vega, and Altair) visible during the summer in the N skies
- sunflower seeds — the seeds of a sunflower, which can be eaten
- sunflower state — Kansas (used as a nickname).
- sunrise service — (sometimes initial capital letters) an outdoor religious service held at dawn on Easter morning.
- sunset industry — any industry that holds little promise of future development
- super-committee — a committee with members from two or more organizations or political groups
- super-efficient — performing or functioning in the best possible manner with the least waste of time and effort; having and using requisite knowledge, skill, and industry; competent; capable: a reliable, efficient assistant.
- super-sexuality — sexual character; possession of the structural and functional traits of sex.
- superabundantly — very or too abundantly
- superbureaucrat — an important or highly powerful bureaucrat
- superconfidence — great or extreme confidence, overconfidence
- superconvenient — highly convenient
- superefficiency — the quality or condition of being superefficient
- superexaltation — extreme or supreme exaltation; the act of superexalting; the process or condition of being superexalted
- superexcellence — extreme or supreme excellence; the quality of being superexcellent
- superexcitation — the act of exciting.
- superficialness — being at, on, or near the surface: a superficial wound.
- superfluousness — being more than is sufficient or required; excessive.
- supergiant star — Astronomy. an exceptionally luminous star whose diameter is more than 100 times that of the sun, as Betelgeuse or Antares.
- supergovernment — a centralized organization formed by a group of governments to enforce justice or maintain peace.
- superheterodyne — denoting, pertaining to, or using a method of processing received radio or video signals in which an incoming modulated wave is changed by the heterodyne process into a lower-frequency wave and then subjected to amplification and subsequent detection.
- superimposition — to impose, place, or set over, above, or on something else.
- superindividual — greater than the individual
- superintendence — a district or place under a superintendent.
- superintendency — a district or place under a superintendent.
- superinvolution — an act or instance of involving or entangling; involvement.
- 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.
- supernaturalism — supernatural character or agency.
- supernaturalist — supernatural character or agency.
- supernaturality — the quality or state of being supernatural; supernaturalism.
- supernaturalize — to make supernatural; give supernatural character or qualities to.
- superordination — Logic. the relation between a universal proposition and a particular proposition of the same quality containing the same terms in the same order.
- superparasitism — the parasitic deposit of eggs on a host already parasitized by a different member of the same species
- superpatriotism — the quality of being superpatriotic
- superphenomenon — a phenomenon that is beyond the typical qualities of phenomena
- superplasticity — the phenomenon, exhibited by certain metals and alloys usually at high temperatures, of stretching to extreme lengths without breaking
- superspecialist — a highly skilled specialist
- suppiluliumas i — king of the Hittites (?1375–?1335 bc); founder of the Hittite empire
- supplementation — the act or process of supplementing.
- support mission — assistance given by one military unit to another to assist in the accomplishment of the supported unit's mission.