411 REFERENCE · Wiktionary
Irregularia
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
Translingual
Etymology
mul irrēgulāris la en irregular -ia abstract suffix.
Proper noun
infraclass class Echinoidea certain sea urchins
Hypernyms
infraclass ; Euechinoidea subclass - subclass
Hyponyms
infraclass Cassiduloida order, Clypeasteroida order (sand dollars), Echinolampadoida order, Holasteroida order, Spatangoida order (heart urchins) - orders
Coordinate terms
infraclass in Euechinoida Carinacea infraclass, Acroechinoidea infraclass - infraclasses; Echinothurioida order - order not placed in infraclass
References
Euechinoidea
mul Sea urchins