skurcz porodowy in inglese:

"It's" is a contraction of "it is."

Her contractions are 10 minutes APART.

He didn't finish the race yesterday, bacause he had a contraction.

Okay, so it causes a small involuntary contraction in my hand by putting a magnetic pulse in my brain

She had felt the contraction, too, but there was nothing they could do about it.

When we write to friends, we often use contractions like ‘I’m’ instead of ‘I am’.

The pain is caused by stomach contractions.

The contraction result in tight fit.