I. thrü-ˈau̇t adverb
Date: 13th century
1. : in or to every part : everywhere
of one color throughout
2. : during the whole time or action : from beginning to end
remained loyal throughout
II. preposition
Date: 13th century
1. : all the way from one end to the other of : in or to every part of
cities throughout the United States
2. : during the whole course or period of
troubled her throughout her life