18-letter words containing s, e, l, f, n, r
- strait of magellan — a strait between the mainland of S South America and Tierra del Fuego, linking the S Pacific with the S Atlantic. Length: 600 km (370 miles). Width: up to 32 km (20 miles)
- sulfuric anhydride — sulfur trioxide.
- sunflower seed oil — the oil extracted from sunflower seeds, used as a salad oil, in the manufacture of margarine, etc
- the bird has flown — the person in question has fled or escaped
- thorfinn karlsefni — 980–after 1007, Icelandic navigator, explorer, and leader of early colonizing expedition to Vinland, in North America.
- throw oneself into — to propel or cast in any way, especially to project or propel from the hand by a sudden forward motion or straightening of the arm and wrist: to throw a ball.
- triangle of forces — a triangle whose sides represent the magnitudes and directions of three forces whose resultant is zero and which are therefore in equilibrium
- turn in on oneself — to withdraw or cause to withdraw from contact with others and become preoccupied with one's own problems
- universal suffrage — suffrage for all persons over a certain age, usually 18 or 21, who in other respects satisfy the requirements established by law.
- university faculty — a division within a university comprising one subject area, or a number of related subject areas
- uriniferous tubule — a urine-bearing tubule in a nephron of a kidney.
- vermilion rockfish — a scarlet-red rockfish, Sebastes miniatus, inhabiting waters along the Pacific coast of North America, important as a food fish.
- wild passionflower — the maypop, Passiflora incarnata.
- wildlife sanctuary — an area where wild animals and plants are protected
- world of one's own — a state of mental detachment from other people