semiannual Hear it!

semiannual Definition

semi·an·nual (-an′yo̵̅o̅ əl)

adjective

  1. done, happening, appearing, etc. every half year or twice a year
  2. lasting only half a year, as some plants

semiannual Related Forms
sem′i·an′·nu·ally adverb
semiannual Synonyms

semiannual

modif.

twice a year, half-yearly, biannual, every six months, semiyearly; see also biannual, seasonal.

semiannual Usage Examples

Modifies a noun

  • variation: This causes the semiannual variation of the amplitude of ionospheric equatorial anomaly through fountain effect.
  • basis: Regular consultative meetings shall be held on a semiannual basis.