Step 1: Recall the facts:
Break the word: hyper means high or above normal, and tension here means pressure.
Step 2: Match the facts with the options:
Option (1): Normal pressure is the healthy range and is not called hypertension.
Option (2): The prefix hyper points to a rise, and the pressure being measured is blood pressure. This matches.
Option (3): A fall in pressure is called hypotension, so it is the opposite.
Option (4): Breathing speed is a different measure, so it does not define hypertension.
Step 3: Decide:
High blood pressure is the medical meaning of hypertension.
Final Answer:
Option (2) is correct. \[\boxed{\text{Abnormally elevated blood pressure}}\]