What is the meaning of progressive?

noun

• A tense of verbs used in describing action that is on-going.
  • synonyms: progressive tense, imperfect, imperfect tense, continuous tense
• A person who favors a political philosophy of progress and reform and the protection of civil liberties.
  • synonyms: liberal, liberalist

adjective

• Favoring or promoting progress.
  • usage: "progressive schools"
• Favoring or promoting reform (often by government action.
  • synonyms: reformist, reform-minded
• Of taxes. ( adjusted so that the rate increases as the amount of income increases)
• Gradually advancing in extent.
• Of a card game or a dance. ( involving a series of sections for which the participants successively change place or relative position)
  • usage: "progressive euchre"; "progressive tournaments"
• Advancing in severity.
  • usage: "progressive paralysis"