Definition - What does Phased Array Technology mean? Ultrasound beams are used in phased array (PA) ultrasonic equipment, which is considered an advanced method of ultrasonic testing. This technology finds applications in medical science and non-destructive testing. This method is more accurate at finding flaws in manufactured materials such as welds.
A migraine is a medical condition which usually causes a pounding, throbbing headache on one side of the head. The pain may be very bad and hurt so much that a person may have a hard time doing anything. While most people who have migraines get a headache, not everyone does.
Definition of migraine noun from the Oxford Advanced Learner's Dictionary. a very severe type of headache which often makes a person feel sick and have difficulty in seeing severe migraine I'm getting a migraine.I forgot to take my migraine medication. very severe type of headache which often makes a person feel sick and have difficulty in seeing severe migraine I'm getting a migraine. I forgot to take my migraine medication.