Burst (asunder) - Vine's Expository Dictionary of New Testament Words
Burst (asunder)[ 1,,G4486, rhegnumi ]
See BREAK, A. No. 6.
[ 2,,G2997,lakeo / lasko ] primarily, to crack, or crash," denotes "to burst asunder with a crack, crack open" (always of making a noise), is used in Acts 1:18.