leap year
LowFormal, Technical, Everyday
Definition
Meaning
A year, occurring every four years, that contains one extra day (February 29) to keep the calendar year synchronized with the astronomical year.
By extension, a period requiring correction or an anomaly in a system. Also, a rare opportunity or event.
Linguistics
Semantic Notes
Primarily a calendrical term, used metaphorically to denote rarity or correction.
Dialectal Variation
British vs American Usage
Differences
No differences in meaning, spelling, or usage. The concept is identical in both cultures.
Connotations
Identical connotations, often associated with folklore (e.g., women proposing to men on February 29), rare events, or technical correction.
Frequency
Used with identical frequency in both varieties when discussing calendars, history, or rare occasions.
Vocabulary
Collocations
Grammar
Valency Patterns
[It] + be + a leap year.[The year] + be + a leap year.[To calculate] + if + [year] + be + a leap year.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “once in a leap year (i.e., very rarely)”
Usage
Context Usage
Business
Used in project planning for timelines that span multiple years. 'The delivery schedule accounts for the extra day in the leap year.'
Academic
Used in history, astronomy, and mathematics to discuss calendar systems and temporal calculations.
Everyday
Used to discuss birthdays, anniversaries, or planning that falls on February 29. 'My sister only has a birthday every leap year.'
Technical
Used in software development, astronomy, and calendrical science for precise timekeeping.
Examples
By Part of Speech
adjective
British English
- She has a leap-year birthday.
American English
- He was born on a leap-year day.
Examples
By CEFR Level
- 2024 is a leap year.
- There are 366 days in a leap year.
- My birthday is on February 29th, so I only celebrate it properly every leap year.
- The Olympics are often held in a leap year.
- The software had a bug that failed to correctly calculate dates for leap years.
- According to tradition, women can propose marriage to men during a leap year.
- The Gregorian calendar's leap year rule ensures a far more accurate alignment with the solar year than its predecessor.
- Planning a multi-year financial forecast requires meticulous accounting for the extra day in each leap year.
Learning
Memory Aids
Mnemonic
A year takes a LEAP by adding an extra day to catch up with the sun's cycle.
Conceptual Metaphor
A LEAP YEAR is a CORRECTION (to the calendar), A LEAP YEAR is a RARE OPPORTUNITY (like a leap day).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating as 'прыгающий год' or 'скачущий год'. The correct term is 'високосный год'.
- The word 'leap' in this context does not imply physical jumping, but a 'jump' or 'skip' in the calendar sequence.
Common Mistakes
- Misspelling as 'leapyear' (should be two words).
- Incorrectly stating that leap years occur every four years without exception (century years are not leap years unless divisible by 400).
Practice
Quiz
Which of the following years was a leap year?
FAQ
Frequently Asked Questions
Typically every four years, but century years (like 1900) are not leap years unless they are divisible by 400 (like 2000).
To correct for the fact that a solar year (Earth's orbit around the Sun) is about 365.2422 days, not exactly 365 days.
It is commonly called 'Leap Day' or sometimes 'Bissextile Day'.
In some cultures, particularly Irish and British folklore, February 29th is a day when women can traditionally propose marriage to men.