Schematic is an adjective that means symbolic or simplified. 

The root word of our word of the day, scheme, came from the Latin word schema (SKEH ma) and arrived in English in the mid 16th century. It referred to a celestial diagram. In time, its offspring came to refer to a diagram of any kind. Schematic could be thought of as the adverb version of it. It can also be used as a noun that refers to a diagram. Here’s an example:

The schematic Paul showed us was very helpful. It was great to be able to see a diagram of the pool before the crew began building it.