Premanand Maharaj Ji
What is meditation (dhyan), and can I meditate through chanting or remembering God?
Any way of fixing the mind on God is dhyan
Meditation is keeping the mind from the world and placing it on God, whether through the Name, the form, remembrance or His pastimes. The form does not matter; what matters is that worldly thinking drops away and thoughts of God take its place.
Do not let the mind's movement go into the world. Place it in the Name, or in God's form, or in remembrance of God. Place it on God in whatever way you can.