Microbe
Noun
びせいぶつ
微生物学の専門家は何時に来る予定ですか。
What time is the microbiology specialist scheduled for?
A delicate life thing (生物 = biology) is a life thing that is very delicate. So small and delicate. It's a microorganism.
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.