1. A genus of starfish found in northern Atlantic and Pacific waters, typically having five arms and a reddish or orange color.
Usage: scientific/taxonomic term; often used in marine biology and zoology

Examples

• The asterias is a common starfish species in cold ocean waters.
• Marine biologists studied the asterias population along the rocky coast.
• The asterias uses its tube feet to move slowly across the seafloor.
• Children observed asterias in the tide pools during their beach trip.
• The asterias feeds on mollusks and other small marine organisms.