What do the root word theo mean?

The root word theo comes from the Greek word θεός (theos), which means god.

Here are some examples of words that use this root:

* Theology: The study of God and religious beliefs.

* Theism: The belief in the existence of God.

* Atheism: The disbelief in the existence of God.

* Monotheism: The belief in one God.

* Polytheism: The belief in multiple gods.

* Pantheism: The belief that God is everything and everything is God.

* Anthropomorphism: The attribution of human characteristics to a god or other nonhuman being.

So, whenever you see "theo" in a word, it usually indicates a connection to religion, God, or divine matters.