Invertebrate Classification

adjective relating to or characteristic of the Aclididae family of marine worms

• The aclidian species is known for its unique reproductive system.
• Have you heard about that aclidian creature with two hearts?
• I can't believe she's dating an aclidian, they're so weird.
• Her mind worked in an aclidian manner, making connections others couldn't see.

noun a taxonomic group of animals that lack a body cavity or coelom

• Acoelomata is a phylum of animals characterized by the absence of a body cavity.
• Did you know acoelomata animals don't have a body cavity?
• Those acoelomata critters have no space inside their bodies.
• Living without a body cavity is like being an acoelomata in a world full of spaces.