In the time of; as long as the action or existence of;
as,
during
life;
during
the space of a year.
Webster 1828 Edition
During
DURING
,
ppr.
Of dure. Continuing; lasting; holding on; as during life, that is, life continuing; during our earthly pilgrimage; during the space of a year; during this or that. These phrases are the case absolute, or independent clauses; durante vita, durante hoc.