Definition

Adverb: - Every hundred years; once in a century: Describes an event or action that occurs or is done each century, or on the hundredth anniversary of something.

Usage

The adverb "centennially" is used to modify a verb, describing the frequency or timing of an action. It is a formal word, most commonly found in historical, academic, or official contexts.

Examples

• The monument's cornerstone is replaced centennially.
• The society holds a grand reunion centennially.
• This natural phenomenon is observed centennially.

Advanced Usage

• "to occur centennially": to happen once every hundred years.
  • The alignment of these planets occurs centennially.
• Marking a centennial: Used in the context of commemorating a 100-year anniversary.
  • The town's founding is commemorated centennially with a parade and pageant.

Variants and Related Words

• Centennial (noun): A hundredth anniversary or its celebration.
  • The city planned a large festival for its centennial.
• Centennial (adjective): Relating to a period of one hundred years or a hundredth anniversary.
  • The centennial celebration lasted a full week.
• Bicentennially (adverb): Every two hundred years.
• Semicentennially (adverb): Every fifty years.

Synonyms

• Once a century: Happening one time in a hundred years.
• Every hundred years: Recurring with a period of one century.

Antonyms

• Annually: Happening once every year.
• Decennially: Happening once every ten years.

Adverb

1. every hundred years; once in a century
   • the birthday of this city is being celebrated centennially