{"era":"current","word":"penetrate","meaning":"to enter, pierce, or force a way into something","children":[{"era":"classical","word":"penētrātus","meaning":"entered, penetrated","children":[{"era":"classical","word":"penētrō","meaning":"to enter, pierce, or pass within","children":[{"era":"classical","word":"penes + intrō","meaning":"within + to enter","children":[],"language":"Latin"}],"language":"Latin"}],"language":"Latin"}],"language":"Modern English"}