Etymology of the English word bimestrial
the English word
bimestrialderived from the Latin word
bimestris (two months old; of, lasting two months)
derived from the Latin word
mensis (month)
derived from the Proto-Indo-European root
*me-derived from the Latin word
bi-derived from the Latin word
bis (two)
derived from the Proto-Indo-European root
*dwo-derived from the Old Latin word
duisDate
The earliest known usage of bimestrial in English dates from the 19th century.