1. Plural of gastrotrich; microscopic aquatic animals belonging to the phylum Gastrotricha, characterized by a cylindrical body covered with cilia and spines.
Usage: scientific; biology

Examples

• Gastrotrichs are commonly found in freshwater and marine sediments.
• Under a microscope, gastrotrichs appear as tiny, worm-like creatures with ciliated bodies.
• Marine biologists study gastrotrichs to understand microscopic ecosystem dynamics.
• Gastrotrichs feed on bacteria and organic particles in their aquatic habitats.
• The phylum Gastrotricha includes hundreds of species of these small organisms.