After swimming in the lake, she developed otitis externa and had severe earache.

During the anatomy lecture, the professor pointed to the auris externa on the diagram to explain how sound funnels toward the eardrum.

The surgeon explained that the patient's hepatitis externa required targeted antibiotic therapy to prevent further complications.

To reduce costs, the company decided to externalise some of its customer service operations.

Last year, the company externalised its payroll services to reduce costs and focus on core functions.

An external stimulus, such as a sudden loud noise, triggered the mouse's startle reflex.

Many animals rely on the shape of their external ears to locate prey.

The protagonist's external conflict with the corrupt mayor drives the novel's most dramatic scenes.

Please avoid clicking on suspicious external links in the email.

The brain constantly filters external stimuli to focus on relevant information.