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non-explosive
non-explosive adj. 
/ˌnɒnᵻkˈspləʊzɪv/, /ˌnɒnɛkˈspləʊsɪv/, /ˌnɒnɛkˈspləʊzɪv/, /ˌnɑnᵻkˈsploʊzɪv/, /ˌnɑnɛkˈsploʊsɪv/, /ˌnɑnɛkˈsploʊzɪv/
Brit. /ˌnɒnᵻkˈspləʊsɪv/
, /ˌnɒnᵻkˈspləʊsɪv//ˌnɒnᵻkˈspləʊzɪv//ˌnɒnɛkˈspləʊsɪv//ˌnɒnɛkˈspləʊzɪv/U.S. /ˌnɑnᵻkˈsploʊsɪv/
, /ˌnɑnᵻkˈsploʊsɪv//ˌnɑnᵻkˈsploʊzɪv//ˌnɑnɛkˈsploʊsɪv//ˌnɑnɛkˈsploʊzɪv/ΚΠ
1817 Philos. Trans. (Royal Soc.) 107 80 In a mixture of olefiant gas non-explosive from the excess of inflammable gas, much carbonic oxide was formed.
1877 Encycl. Brit. VI. 72/2 When a lighted candle is exposed in a non-explosive mixture of this gas, the flame gradually elongates.
1998 Exper. & Clin. Endocrinol. & Diabetes 106 Suppl. No. 3. 22 Ammonium persulfate, a non-explosive, non-hazardous chemical.
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