16-letter words containing a, t, o, n, i
- resonant circuit — A resonant circuit combines an inductor and capacitor to make a circuit that responds to a frequency.
- restriction play — a limited number of opening moves that are predetermined by their chance selection from an accepted list.
- retrocessionaire — a reinsurance company that accepts or takes a retrocession.
- rhinopharyngitis — inflammation of the mucous membranes of the nose and pharynx.
- riccati equation — a differential equation, dy/dx + fy 2 + gy + h = 0, where f, g, and h are functions of x.
- right honourable — (in Britain and certain Commonwealth countries) a title of respect for a Privy Councillor or an appeal-court judge
- rigid designator — an expression that identifies the same individual in every possible world: for example, "Shakespeare" is a rigid designator since it is possible that Shakespeare might not have been a playwright but not that he might not have been Shakespeare
- robin's plantain — the rattlesnake weed, Hieracium venosum.
- rodent operative — a name sometimes used for an official (operative) employed by a local authority to destroy vermin
- romantic fiction — a genre of fiction focused on romantic love
- romeo and juliet — a tragedy (produced between 1591 and 1596) by Shakespeare.
- roosevelt island — Formerly Welfare Island, Blackwells Island. an island in the East River, New York City: residential community. 1½ miles (2½ km) long.
- rotation of axes — a process of replacing the axes in a Cartesian coordinate system with a new set of axes making a specified angle with and having the same origin as the original axes.
- roundabout chair — corner chair.
- russian orthodox — of or relating to the Russian Orthodox Church
- russian roulette — a game of high risk in which each player in turn, using a revolver containing one bullet, spins the cylinder of the revolver, points the muzzle at the head, and pulls the trigger.
- saccharification — to convert (starch) into sugar.
- safety-conscious — conscious of being safe and preventing danger
- saint peter port — a port and resort in the Channel Islands: the capital of the Bailiwick of Guernsey, on the E coast of the island of Guernsey. Pop: 28 310 (2001)
- saint-john perse — (Alexis Saint-Léger Léger) 1887–1975, French diplomat and poet: Nobel Prize in literature 1960.
- saint-john-night — Midsummer Eve.
- saint-ulmo-light — St. Elmo's fire.
- sales automation — Sales Force Automation
- san antonio peak — a mountain in S California: highest peak in the San Gabriel Mountains, near San Bernardino. 10,080 feet (3072 meters).
- sangre de cristo — a mountain range in S Colorado and N New Mexico: a part of the Rocky Mountains. Highest peak, Blanca Peak, 14,390 feet (4385 meters).
- santiago de cuba — a region in Ecuador, E of the Andes: the border long disputed by Peru.
- saorstat eireann — Irish name of Irish Free State.
- saratoga springs — a city in E New York: health resort; horse races.
- satellite nation — a country under the domination of a foreign power
- saturation level — carrying capacity.
- saturation point — the point at which a substance will receive no more of another substance in solution, chemical combination, etc.
- savage's station — a locality in E Virginia, near Richmond: Civil War battle in 1862.
- schouten islands — a group of islands belonging to Papua New Guinea, in the Pacific Oceans, off the N coast of New Guinea.
- seaside knotweed — See under knotweed.
- seat of learning — People sometimes refer to a university or a similar institution as a seat of learning.
- second adventist — Adventist (def 1).
- secondary tissue — tissue derived from cambium.
- sedimentary rock — rock formed from compacted minerals
- sekondi-takoradi — a seaport in SW Ghana.
- self-affirmation — the act or an instance of affirming; state of being affirmed.
- self-approbation — approval; commendation.
- self-containment — the state of being self-contained.
- self-cultivation — the act or art of cultivating.
- self-degradation — the act of degrading.
- self-denigration — to speak damagingly of; criticize in a derogatory manner; sully; defame: to denigrate someone's character.
- self-deprecation — belittling or undervaluing oneself; excessively modest.
- self-deprivation — the act of depriving.
- self-designation — a name taken for oneself or one's own people
- self-elaboration — an act or instance of elaborating.
- self-examination — examination into one's own state, conduct, motives, etc.