Definition of "intracranial" [in•tra•cra•ni•al]

• Occurring or situated within the cranium. (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.

• "According to the research team, these issues could be caused by increased pressure inside the head - what is known as intracranial pressure - but none of the astronauts reported symptoms that are usually associated with the condition, such as chronic headaches, double vision or ringing in the ears."
• "A big fear is bleeding strokes called intracranial hemorrhages that, if not fatal, are often especially disabling."
• "But the biggest predictor, really, here is to making sure those pressures inside the head -- what are called the intracranial pressures inside the head -- remain low, remain normal."