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A fossil echinoid.

lly in the liver and lungs, which often cause death. It is the larval stage of the Tænia echinococcus, a small tapeworm peculiar to the dog.

One of the Echinodermata.

Relating or belonging to the echinoderms.

e animal kingdom. By many writers it was formerly included in the Radiata. [Written also Echinoderma.]

Relating to Echinodermata; echinodermal.

Of or pertaining to the Echinoidea. -- n.

The class Echinodermata which includes the sea urchins. They have a calcareous, usually more or less spheroidal or disk-shaped, composed of many united plates, and covered with movable spines. See Spatangoid, Clypeastroid. [Written also Echinidea, and Echinoida.]

The Echinodermata.

Set with small spines or prickles.

A genus of echinoderms, including the common edible sea urchin of Europe.

A mode of etching upon metals by electrolytic action.

By way of encroachment.

carried out by means of the above process; a pattern on metal, glass, etc., produced by etching.

By pilfering or petty stealing.

In a flinching manner.

Having the habit of catching insects on the wing.

A construction consisting essentially of one or more aëroplanes for gliding in an inclined path from a height to the ground.

A kind of dynamo-electric machine; -- so named from its French inventor, M. Gramme. Knight.

roduced by lines crossing each other at angles more or less acute; -- called also crosshatching.