Definition of "reticular" [re•tic•u•lar]

• Resembling a net in form; netlike: reticular tissue. (adjective)
• Marked by complexity; intricate. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "One of these filters is called the reticular activating system RAS."
• "The part of the brain that keeps us awake is known as the reticular activating system, or R.A.S., and is found on both sides of the brain."
• "The part of your brain that does this filtering is a fine network of nerves at the base of your brain called the reticular activating system RAS."