Englishfor English speakers
undergo
Verb
—
If you undergo something, it happens to you; often it is not nice.
The country has undergone great changes in the last decade.
She had to undergo surgery because of her broken leg.
The bridge is currently undergoing tests to see if it can be reopened.
modification
Noun
—
A modification to something is a change or adjustment to something.
The modification of the computer allowed it to access the Internet easier.
The modifications made broke the device.