Definition of pygidium in English:
noun (plural pygidia-ˈjidēə)Zoology
The terminal part or hind segment of the body in certain invertebrates.
- The pygidium, like the cephalon, was a structure in which segments were fused together.
- A pygidium with an attached thoracic segment represents a meraspid stage of the species.
- By contrast, some representatives of the Olenelloidea have pygidia with multiple segments.
Mid 19th century: modern Latin, from Greek pugē 'rump'.
Definition of pygidium in:
- British & World English dictionary
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.