• Study of scyphozoans
• Study of secularization
• Study of selenology
• Study of semipermeability
• Study of semipseudometrizability
• Study of shamanism
• Study of siegecraft
• Study of sociolinguistics
• Study of soteriology
• Study of sylvics
• Study of synanthropy
• Study of syntactics
• Study of syphilogenesis
• Study of syphilology