19-letter words containing y, a, c, h, t, s
- sympathetic contact — behavior toward an individual based on the individual's personal makeup rather than on his or her group membership.
- symptomatic anthrax — blackleg.
- the eroica symphony — Symphony No. 3 in E flat major by Ludwig van Beethoven
- theoretical physics — abstract use of physics
- ultramicrochemistry — the branch of microchemistry dealing with minute quantities of material weighing one microgram or less.
- waste heat recovery — the use of heat that is produced in a thermodynamic cycle, as in a furnace, combustion engine, etc, in another process, such as heating feedwater or air