What is the meaning of primary?

noun

• A preliminary election where delegates or nominees are chosen.
  • synonyms: primary election
• One of the main flight feathers projecting along the outer edge of a bird's wing.
  • synonyms: primary feather, primary quill
• Astronomy) a celestial body (especially a star) relative to other objects in orbit around it. (
• Coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit.
  • usage: "current through the primary coil induces current in the secondary coil"
  • synonyms: primary coil, primary winding

adjective

• Of first rank or importance or value; direct and immediate rather than secondary.
  • usage: "primary goals"; "a primary effect"; "primary sources"; "a primary interest"
• Not derived from or reducible to something else; basic.
  • usage: "a primary instinct"
• Most important element.
  • usage: "the chief aim of living"; "the main doors were of solid glass"; "the principal rivers of America"; "the principal example"; "policemen were primary targets"; "the master bedroom"; "a master switch"
  • synonyms: chief, main, principal, master
• Of or being the essential or basic part.
  • usage: "an elementary need for love and nurturing"
  • synonyms: elementary, elemental
• Of primary importance.
  • synonyms: basal