- slate-pencil sea urchin
- noun
: a large purple sea urchin (Heterocentrotus mammillatus) having stout heavy spines that resemble slate pencils
Useful english dictionary. 2012.
slate-pencil sea urchin
Look at other dictionaries:
Sea urchin — Taxobox name = Sea urchin image width = 250px image caption = Sea urchins, Sterechinus neumayeri regnum = Animalia phylum = Echinodermata subphylum = Echinozoa classis = Echinoidea classis authority=Leske, 1778 subdivision ranks = Subclasses… … Wikipedia
sea urchin — 1. any echinoderm of the class Echinoidea, having a somewhat globular or discoid form, and a shell composed of many calcareous plates covered with projecting spines. 2. a tall evergreen shrub or small tree, Hakea laurina, of Australia, having… … Universalium
