ACARDITE Meaning of ACARDITE in English əˈkärˌdīt noun( -s )Etymology: origin unknown: a crystalline compound (C 6 H 5 ) 2 NCONH 2 used as a stabilizer in smokeless powder; 1,1-diphenyl-urea Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012