Definition

1. Noun:
   • A period of ten years: "Decennary" refers specifically to a time span or era lasting exactly ten years. It is a formal and somewhat rare term equivalent to "decade."

Examples of Usage

• Noun:
  • The economic policies implemented in the first decennary of the 21st century had long-lasting effects.
  • Historical records are often organized by decennary for easier analysis of trends.

Advanced Usage

• "Within a decennary": Used to indicate something happening inside a ten-year period.
  • The city's population doubled within a single decennary.
• "Spanning a decennary": Describing an event or process that lasts for ten years.
  • The research project, spanning a full decennary, yielded groundbreaking results.

Variants and Related Words

• Decade (n): The much more common and preferred synonym for a ten-year period.
• Decennial (adj): Occurring every ten years or relating to a ten-year period.
  • The company publishes a decennial report.
• Decennium (n): Another rare, formal synonym for a decade or decennary.

Synonyms

• Decade: A period of ten years.
• Ten-year period: A straightforward descriptive phrase.

Notes on Usage

• Formality and Rarity: "Decennary" is a highly formal and uncommon word. In almost all contexts, "decade" is the standard and recommended term.
• Specificity: Unlike more general terms like "era" or "period," "decennary" specifies a precise duration of ten years.

Noun

1. a period of 10 years