Roman inventions Milán Sch.

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Across
  1. 2. thoroughfare for the conveyance of traffic that mostly has an improved surface for use by vehicles
  2. 5. composite material
  3. 7. various surgical tools
  4. 8. a bridge with abutments at each end shaped as a curved arch
  5. 10. the infrastructure that conveys sewage
  6. 11. curved vertical structure spanning an open space underneath it.
  7. 12. ancient missile weapon that launched either bolts or stones at a distant target
  8. 13. structures used to conduct a water stream across a hollow or valley.
Down
  1. 1. place with heated rooms and pools, promoting hygiene and socializing.
  2. 3. a rounded roof on a building or a room
  3. 4. numeral system, based on a combination of letters
  4. 6. mechanism used in water mills, for mechanical power transmission.
  5. 9. erected to commemorate military victories, with the Arch of Constantine being a famous example.