Final answer:
Stridor is a high-pitched sound that occurs due to partial upper airway obstruction, often indicating shortness of breath and other respiratory issues.
Step-by-step explanation:
A high-pitched inspiratory noise caused by a partial upper airway obstruction is called Stridor. Stridor is a symptom of conditions that narrow the airway and cause shortness of breath. This respiratory issue can be associated with other symptoms such as wheezes or stridor, hoarseness, pain with swallowing, and cough. It should not be confused with the loud whooping sound made during a coughing fit by a person with whooping cough, another respiratory condition.