18-letter words containing f, i, s, c, o, t
- skin friction drag — aerodynamic resistance or drag due to the contact of moving air with the surface of an airplane, a glider, etc.
- society of friends — a Christian denomination, founded in England c. 1650 by George Fox, that has no formal creed, liturgy, or priesthood and rejects violence in human relations, esp. warfare
- soft touch sealing — Soft touch sealing is a copolymer seal for a tank, with characteristics designed for softness, used instead of a metal seal to help avoid fire when sparks are generated.
- sonic depth finder — a sonar instrument that uses echolocation to measure depths under water.
- specific viscosity — a measure of the resistance to flow of a fluid, expressed as the ratio of the absolute viscosity of the fluid to that of a reference fluid (usually water in the case of liquids)
- spectrofluorimeter — an instrument in which the spectrum of secondarily emitted fluorescent light is used to identify chemical compounds.
- statement of claim — law: first pleading
- stepping-off place — jumping-off place (def 2).
- sub-classification — to arrange in subclasses.
- symmetric function — a polynomial in several indeterminates that stays the same under any permutation of the indeterminates.
- tale of two cities — a historical novel (1859) by Dickens.
- transmogrification — to change in appearance or form, especially strangely or grotesquely; transform.
- transrectification — rectification occurring in one circuit as a result of the application of an alternating voltage to another circuit.
- 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
- with flying colors — with flying colors, with an overwhelming victory, triumph, or success: He passed the test with flying colors.
- 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.