bissextile

A bissextile year has one extra day in February.

Definition

1. Noun:

   • Leap year: "bissextile" refers to a year containing an extra day (February 29) to keep the calendar year synchronized with the astronomical year. It is synonymous with "leap year."

2. Adjective:

   • Relating to a leap year: "bissextile" describes anything pertaining to a leap year, such as the additional day or the year itself.

Usage Examples

• Noun:

  • The year 2024 is a bissextile, adding an extra day to February. (A leap year with 366 days.)
  • Farmers often plan their planting schedules around a bissextile. (A leap year affecting agricultural calendars.)

• Adjective:

  • The bissextile day is February 29th. (The extra day added in a leap year.)
  • She was born in a bissextile year, so she only celebrates her birthday every four years. (A year with 366 days.)

Advanced Usage

• "Bissextile year": This is the most common phrase, meaning a leap year. The term originates from the Latin bissextilis annus, referring to the twice-repeated sixth day before the Kalends of March in the Roman calendar.

  • The Gregorian calendar includes a bissextile year every four years, except for centuries not divisible by 400. (The rule for determining leap years.)

• "Bissextile day": Specifically refers to February 29.

  • People born on a bissextile day often celebrate on February 28 or March 1 in non-leap years. (The unique birthday of leap year babies.)

Variants and Related Words

• Bissextile (adj) is not commonly used in everyday English; instead, "leap year" (noun) is far more frequent.
• Bissextile is a rare, technical term, primarily found in historical, astronomical, or calendrical contexts.

Synonyms

• Leap year: the standard modern term for a year with 366 days.
• Intercalary year: a year in which an extra day or month is inserted (used in various calendar systems).

Related Idioms

• "Once in a blue moon": While not directly synonymous, it describes something rare, similar to a bissextile day occurring only every four years.

  • Getting a promotion like that happens once in a blue moon, like a bissextile day. (Very infrequently.)

• "Leap year proposal": A tradition that women may propose marriage only during a leap year, specifically on the bissextile day.

  • She followed the old custom and proposed to him on the bissextile day. (A leap year tradition.)