1. native to or restricted to a particular region or population; endemic
Usage: formal or technical variant of endemic; less common in modern usage
2. (of a disease or condition) regularly found in a particular population or area
Usage: medical/epidemiological context

Examples

• The koala is an endemical species found only in Australia.
• Malaria remains an endemical disease in tropical regions.
• These plants are endemical to the Hawaiian Islands.
• The endemical nature of the illness made it difficult to control.
• Researchers studied the endemical bird populations of the Galápagos.