| catena alimentare | food chain | |
| catena del caucaso | caucasus mountains | |
| catena del fondo | back chain | |
| catena di markov | markov chain | |
| catena montuosa | mountain range | |
| catena petrolifera | oil production (chain) | |
| puleggia per catena | chain pulley | |
| reazione a catena | chain reaction |