biennium

noun

1. A period of two years, particularly for purposes involving intercalation or fiscal calculations.

   “During the bienniums 1963–64 and 1965–66, expenditure on regional and inter-regional projects also registered a substantial growth. In fact, the share of regional projects in the total programme during the bienniums 1963–64 and 1965–66 was higher than the 12 per cent deemed desirable by the TAC [Technical Assistance Committee].”

   “Although ideology is related to the propensity for a state to adopt stringent changes to campaign finance law, culture does not have a substantive effect. However, he [Christopher Witko] finds support that a scandal in the previous biennium is associated with changes to campaign finance regulation in the current biennium, in concert with the findings of [Beth] Rosenson (2005) on the adoption of legislative ethics reforms.”

   “Ideology of Republican voters demonstrates a significant, if not enormous, rightward shift during this period. In contrast to Republican legislators, the conservative shifts by Republican voters betided in a few, rather than all, biennia, interrupted by other biennia with no ideological shift.”