Associations to the word «Echinoidea»
Wiktionary
ECHINOIDEA, proper noun. A taxonomic class within the superclass Cryptosyringida — the sea urchins and sand dollars.
Dictionary definition
ECHINOIDEA, noun. Sea urchins and sand dollars.
Wise words
When you have spoken the word, it reigns over you. When it
is unspoken you reign over it.