right through; in every part; from end to end
during the whole of
Cases of word usage
1) throughout (a length, period, of time) (during)
2) (a tree, shrub) having green leaves throughout the year (evergreen)
3) continuing throughout the whole year; lasting for a very long time; living for more than two years (perennial)
4) (of meat) not completely cooked throughout (underdone)
5) the condition of being the same throughout (uniformity)