Definition

1. Adjective:

   • Relating to a 50th anniversary: Describes something connected with or marking the period of fifty years or a fiftieth anniversary.

2. Noun:

   • A 50th anniversary: The celebration or observance of the fiftieth anniversary of an event.

Usage Examples

• Adjective:

  • The town held a semicentennial parade to celebrate its founding.
  • They published a semicentennial history of the university.

• Noun:

  • The company's semicentennial was marked by a gala dinner for all employees.
  • We are planning a large party for our parents' semicentennial.

Advanced Usage

• The term is often used in formal or institutional contexts (e.g., for towns, organizations, universities) rather than informal personal anniversaries, where "fiftieth anniversary" is more common.
• It can function attributively to modify nouns like , , , or .

Variants and Related Words

• Semicentenary: A less common variant with the same meaning as the noun and adjective.
• Quinquagenary: A formal synonym, also meaning a 50th anniversary.
• Jubilee: A general term for a special anniversary, often the 50th (Golden Jubilee).

Synonyms

• Adjective: fiftieth-anniversary
• Noun: fiftieth anniversary, golden jubilee

Related Phrases

• Semicentennial celebration: The event held to mark the 50th anniversary.
• To mark/observe a semicentennial: To celebrate a 50th anniversary.

Adjective

1. of or relating to or marking the 50th anniversary

Noun

1. the 50th anniversary (or the celebration of it)