15-letter words containing s, b, c, a, n
- urban sociology — the sociological study of cities and their role in the development of society.
- vascular bundle — a longitudinal arrangement of strands of xylem and phloem, and sometimes cambium, that forms the fluid-conducting channels of vascular tissue in the rhizomes, stems, and leaf veins of vascular plants, the arrangement varying with the type of plant.
- welsbach burner — a type of gaslight in which a mantle containing thorium and cerium compounds becomes incandescent when heated by a gas flame