Definition of "subversion"

subversion¹

/sʌbˈvɜː.ʃən/

noun
countable and uncountable, plural subversions
1. (obsolete) The act of subverting; overturning; flipping from beneath.
2. The act of overthrowing a government or a ruler; dethronement.
3. The condition of being subverted.
4. A systematic attempt to overthrow a government by working from within; undermining.

subversion²

/ˈsʌbˌvɜː.ʒən/

noun
plural subversions
1. A revision considered more similar to preceding subversions than a revision deemed a new "version" is to preceding versions.