a condition when blood vessels lose their elasticity, the blood starts to flow more intermittently rather than a constant flow due to the arteries are unable to expand and relax with the pulse as easily
Art-eeo-sk-ler-osis.
Atherosclerosis is disease of the arteries when you get thickening and hardening of the vessels causing obstruction to the flow of blood. If it is in the arteries of the brain you can get stroke, dementia and death