Definition of Chile saltpetre in English:

Chile saltpetre

noun

another term for sodium nitrate, especially as a commercial product
  • ‘They also get then some Chile saltpetre to get the growth in it again.’
  • ‘In 1913 the only commercial fertilizer was Chile saltpetre, and it was running out.’
  • ‘These products had long helped to boost farmers’ yields, and DAVV's hardest competition came initially from imported Chile saltpetre.’
  • ‘Iodine is mined as sodium iodate, NaIO 3, which is present in Chile saltpetre.’
  • ‘The most common mineral is rock salt (sodium chloride, NaCl, or halite), but it occurs in many other minerals including sodium borate, sodium carbonate, sodium nitrate (Chile saltpetre).’

Pronunciation

Chile saltpetre

/ˌtʃɪli sɔːltˈpiːtə/