1. occurring every ten years or lasting for ten years
2. relating to or spanning a period of ten years

Examples

• The decadal census provides a comprehensive snapshot of the population every ten years.
• Climate scientists analyze decadal trends to understand long-term environmental changes.
• The decadal review of the company's strategic plan revealed significant growth.
• Decadal variations in ocean temperature affect weather patterns across the globe.
• The study examined decadal cycles in economic data spanning several decades.
• Decadal assessments help policymakers track progress toward sustainability goals.