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Aristotle's Lantern :: Aristotle's lantern () The five united jaws and accessory ossicles of certain sea urchins.

Spatangoidea :: Spatangoidea (n. pl.) An order of irregular sea urchins, usually having a more or less heart-shaped shell with four or five petal-like ambulacra above. The mouth is edentulous and situated anteriorly, on the under side..

Sea Egg :: Sea egg () A sea urchin.

Church :: Church (v. t.) To bless according to a prescribed form, or to unite with in publicly returning thanks in church, as after deliverance from the dangers of childbirth; as, the churching of women..

Sea Hedgehog :: Sea hedgehog () A sea urchin.

Echinus :: Echinus (n.) A name sometimes given to the egg and anchor or egg and dart molding, because that ornament is often identified with Roman Doric capital. The name probably alludes to the shape of the shell of the sea urchin..

Pluteus :: Pluteus (n.) The free-swimming larva of sea urchins and ophiurans, having several long stiff processes inclosing calcareous rods..

Auricula :: Auricula (n.) One of the five arched processes of the shell around the jaws of a sea urchin.

Scrobicula :: Scrobicula (n.) One of the smooth areas surrounding the tubercles of a sea urchin.

Urchin :: Urchin (n.) A pert or roguish child; -- now commonly used only of a boy.

Lurching :: Lurching (p. pr. & vb. n.) of Lurc.

Lithophagous :: Lithophagous (a.) Eating or destroying stone; -- applied to various animals which make burrows in stone, as many bivalve mollusks, certain sponges, annelids, and sea urchins. See Lithodomus..

Sea Urchin :: Sea urchin () Any one of numerous species of echinoderms of the order Echinoidea.

Micraster :: Micraster (n.) A genus of sea urchins, similar to Spatangus, abounding in the chalk formation; -- from the starlike disposal of the ambulacral furrows..

Urchon :: Urchon (n.) The urchin, or hedgehog..

Churching :: Churching (p. pr. & vb. n.) of Churc.

Urchin :: Urchin (n.) A hedgehog.

Regularia :: Regularia (n. pl.) A division of Echini which includes the circular, or regular, sea urchins..

Coronal :: Coronal (a.) Of or pertaining to the shell of a sea urchin.

Galerite :: Galerite (n.) A cretaceous fossil sea urchin of the genus Galerites.

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