de- /diː, dɪ/ 
 prefix[
Language: Old French; 
Origin: Latin de- 'from, down, away' and Latin dis- 'apart']
1.  shows an opposite: 
 deindustrialization  (=becoming less industrial)2.
 deindustrialization  (=becoming less industrial)2.  shows that something is removed: 
 Debone the fish  (=remove its bones).
 Debone the fish  (=remove its bones). The king was dethroned  (=removed from power).3.
 The king was dethroned  (=removed from power).3.  shows that something is reduced: 
 The government have devalued the currency.
 The government have devalued the currency.  [TahlilGaran] Dictionary of Contemporary English ▲