18-letter words containing f, e, o, r, s
- sunflower seed oil — the oil extracted from sunflower seeds, used as a salad oil, in the manufacture of margarine, etc
- surface-to-surface — (of a missile, message, etc.) capable of traveling from a base on the surface of the earth to a target also on the surface.
- symmetric function — a polynomial in several indeterminates that stays the same under any permutation of the indeterminates.
- take the wraps off — to reveal
- terms of reference — Terms of reference are the instructions given to someone when they are asked to consider or investigate a particular subject, telling them what they must deal with and what they can ignore.
- the bird has flown — the person in question has fled or escaped
- the first sea lord — the senior of the two serving naval officers who sits on the admiralty board of the Ministry of Defence
- the mosque of omar — the mosque in Jerusalem, Israel, built in 691 ad by caliph 'Abd al-Malik: the third most holy place of Islam; stands on the Temple Mount alongside the al-Aqsa mosque
- the worse for wear — If you say that someone is the worse for wear, you mean that they are tired, ill, or in a bad state because they have been very active, been through a difficult experience, or been drinking alcohol.
- 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.
- to be said for sth — If you say there is a lot to be said for something, you mean you think it has a lot of good qualities or aspects.
- to feast your eyes — If you feast your eyes on something, you look at it for a long time with great attention because you find it very attractive.
- to play favourites — to display favouritism
- torsion-free group — a group in which every element other than the identity has infinite order.
- transrectification — rectification occurring in one circuit as a result of the application of an alternating voltage to another circuit.
- treasury of merits — the superabundant store of merits and satisfactions, comprising those of Christ, the Virgin Mary, and the saints.
- treaty of rijswijk — a treaty signed at Rijswijk in the Netherlands in 1697, ending the War of the Grand Alliance
- 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
- tufted loosestrife — a primulaceous plant Naumburgia thyrsiflora
- tune someone grief — to annoy or harass someone
- turn in on oneself — to withdraw or cause to withdraw from contact with others and become preoccupied with one's own problems
- under the aegis of — guided or protected by
- ur of the chaldees — the city where Abraham was born, sometimes identified with the Sumerian city of Ur. Gen. 11:28, 31; 15:7; Neh. 9:7.
- 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.
- visiting professor — a professor from another institution invited to teach at a university or college for a limited period, usually for a semester or one academic year.
- warrant of fitness — a six-monthly certificate required for motor vehicles certifying mechanical soundness
- weather forecaster — meteorologist
- wild passionflower — the maypop, Passiflora incarnata.
- work one's ass off — work extremely hard
- world of one's own — a state of mental detachment from other people
- writ of assistance — a writ issued by a superior colonial court authorizing officers of the British crown to summon aid and enter and search any premises.
- yelloweye rockfish — a red rockfish, Sebastes ruberrimus, of waters along the Pacific coast of North America, having eyes that are yellow and possessed of strong, sawlike bony ridges on the head.
- zone of saturation — the ground below the water table