19-letter words containing a, s, c, o, m, y
- spherical astronomy — the branch of astronomy dealing with the determination of the positions of celestial bodies on the celestial sphere.
- stationers' company — a company or guild of the city of London composed of booksellers, printers, dealers in writing materials, etc., incorporated in 1557.
- sympathetic contact — behavior toward an individual based on the individual's personal makeup rather than on his or her group membership.
- symptomatic anthrax — blackleg.
- synchromesh gearbox — A synchromesh gearbox is a usually manually operated transmission in which a change of gears takes place between gears that are already revolving at the same speed.
- synchronous machine — an alternating-current machine in which the average speed of normal operation is exactly proportional to the frequency of the system to which it is connected.
- the eroica symphony — Symphony No. 3 in E flat major by Ludwig van Beethoven
- ultramicrochemistry — the branch of microchemistry dealing with minute quantities of material weighing one microgram or less.
- volumetric analysis — determination of the concentration, by volume, of a substance in a solution, as by titration.