1. [ noun ] (biology,zoology) in some classifications considered a separate phylum: microscopic arachnid-like invertebrates living in water or damp moss having 4 pairs of legs and instead of a mouth a pair of stylets or needle-like piercing organs connected with the pharynx
Synonyms: class_Tardigrada
Related terms: class Arthropoda tardigrade
Similar spelling:   tardigrade