The distance through the center of a circle or sphere from one side to the other.

The profession of examining people's eyes to find out if they need glasses or medical treatment.

To examine a problem with the aim of coming to a “thorough” “knowledge, understanding” of it.

A sketch or “drawing” of lines “across” a page; (verb) to “draw” a sketch or line figure

Fiendish, evil, wicked; literally, pertaining to the Devil as one who “throws” evil “across” an area

What does the prefix circ- or circum- mean?

What does the word circulation mean?

When you go on a trip, you may do this.

If someone is wearing a circular band of flowers on her head, what might it be called?

If you sail around the world in 80 days, you have _______the glove.

What can you do to almost any bad situation by thinking before you do something?

ven, vent

re-

mis-

un-

My friend is very _________. She likes to explore new places and try new things.

I went to a ____________ for teachers. People came from all over the state to learn new ways to teach and study new research.

Halloween is a big _____ for my family. We all dress up and walk around the neighborhood together.

Taking vitamins each day is an example of ______ medicine.

The prefix fore means

The company was trying to stay in the ______________ of their industry by replacing all of their old and obsolete equipment.00

A day later the ______________ had turned ominous - heavy rains all weekend and flooding in the metro area.

Prefixes are