All Members
All Hands, Everyone, Everybody
noun
All members means all members. This is also a fancy way to say everybody.
ぜんいん
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
全員男せいです。
They are all males.
トーフグの社員は、全員がベーコンソムリエのしけんを受けることになりました。
They decided that every Tofugu employee will take the bacon sommelier exam.
全員がさんかするのはむずかしそうですね。
Looks like it'll be difficult for everyone to make it, yeah?