semi-annual
Definition
- Adjective:
- Occurring twice a year: "semi-annual" describes something that happens every half-year, or two times within a twelve-month period.
- Lasting half a year: It can also refer to something that has a duration of six months.
Usage Examples
- (A report issued twice per year.)
- (Meetings that occur every six months.)
- (A subscription lasting half a year.)
Advanced Usage
"semi-annual basis": a phrase indicating that an event or action occurs every six months.
- Interest is calculated on a semi-annual basis. (Interest is computed twice yearly.)
"semi-annual event": an event scheduled to happen twice a year.
- The semi-annual sale attracts many shoppers. (A sale occurring in spring and autumn.)
Variants and Related Words
Semi-annually (adverb): in a manner that occurs twice a year.
- The magazine is published semi-annually. (It comes out every six months.)
Annual (adj): occurring once a year.
- Compare with annual, which happens only once per year. (Annual is a related term with a different frequency.)
Synonyms
Biannual: occurring twice a year (often used interchangeably with "semi-annual").
- The biannual conference is held in March and September. (Synonym for semi-annual event.)
Half-yearly: happening every six months.
- The half-yearly audit checks the accounts. (Synonym for semi-annual review.)
Related Idioms
- "On the half-year": a less common phrase meaning every six months.
- Payments are due on the half-year. (Payments are required twice annually.)
Notes on Usage
- "Semi-annual" is often hyphenated, but "semiannual" (without hyphen) is also accepted in formal writing. The hyphen helps clarify the meaning of "half" (semi) combined with "annual" (yearly).