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Pronunciation varies by accent · adjective
(uncommon) Synonym of biennial: of or concerning a two-year period; lasting or occurring every two years..
The first expedient adopted to reconcile the lunar and solar years seems to have been the addition of a month of thirty days to every second year. Two lunar years would thus contain 25 months, or 738 days, while two solar years, of 365¼ days each, contain 730½ days. The difference of 7½ days was still too great to escape observation; it was accordingly proposed by Cleostratus of Tenedos, who flourished shortly after the time of Thales, to omit the biennary intercalation every eighth year.
Use biennary when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Biennary means (uncommon) Synonym of biennial: of or concerning a two-year period; lasting or occurring every two years..
Common synonyms include biennial.
The opposite depends on the specific sense.
The first expedient adopted to reconcile the lunar and solar years seems to have been the addition of a month of thirty days to every second year. Two lunar years would thus contain 25 months, or 738 days, while two solar years, of 365¼ days each, contain 730½ days. The difference of 7½ days was still too great to escape observation; it was accordingly proposed by Cleostratus of Tenedos, who flourished shortly after the time of Thales, to omit the biennary intercalation every eighth year.
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