Definition: to explode
(‘blow (something) up’ means ‘to cause something to explode’)
(This phrasal verb has more than one meaning)
E.g.1: I was watering a plant that was on top of the TV when some water went into the back of the television and it blew up.
E.g.2: If you turn the power up too high it might blow up.
This phrasal verb cannot be separated.