19-letter words containing c, h, i, s, t, y
- rhythmic gymnastics — a form of gymnastics involving movements using hand apparatus such as balls, hoops, and ribbons
- semidetached binary — a pair of stars that are so close together that mass transfer occurs from one to the other
- simple carbohydrate — a carbohydrate, as glucose, that consists of a single monosaccharide unit.
- social anthropology — study of human culture
- sodium hypochlorite — a pale-green, crystalline compound, NaOCl, unstable in air, soluble in cold water, decomposes in hot water: used as a bleaching agent for paper and textiles, in water purification, in household use, and as a fungicide.
- solid-state physics — the branch of physics that deals with the macroscopic physical properties of matter, especially solids; the study of the electromagnetic, structural, and thermodynamic properties of solids.
- spherical astronomy — the branch of astronomy dealing with the determination of the positions of celestial bodies on the celestial sphere.
- sympathetic contact — behavior toward an individual based on the individual's personal makeup rather than on his or her group membership.
- symptomatic anthrax — blackleg.
- synthetic detergent — any synthetic substance, other than soap, that is an effective cleanser and functions equally well as a surface-active agent in hard or soft water.
- the eroica symphony — Symphony No. 3 in E flat major by Ludwig van Beethoven
- theoretical physics — abstract use of physics
- to click your heels — If someone such as a soldier clicks their heels, they make a sound by knocking the heels of their shoes together when saluting or greeting someone.
- ultramicrochemistry — the branch of microchemistry dealing with minute quantities of material weighing one microgram or less.
- with flying colours — If you pass a test with flying colours, you have done very well in the test.