Defn: To take position in echelon.
Change direction to the left, echelon by battalion from the right.
Upton (Tactics).

ECHIDNA
E*chid"na, n. Etym: [L., a viper, adder, Gr.

1. (Gr. Myth.)

Defn: A monster, half maid and half serpent.

2. (Zoöl.)

Defn: A genus of Monotremata found in Australia, Tasmania, and New Guinea. They are toothless and covered with spines; — called also porcupine ant-eater, and Australian ant-eater.

ECHIDNINE
E*chid"nine (; 104), n. Etym: [See Echidna.] (Chem.)

Defn: The clear, viscid fluid secreted by the poison glands of certain serpents; also, a nitrogenous base contained in this, and supposed to be the active poisonous principle of the virus. Brande & C.

ECHINATE; ECHINATED
Ech"i*nate, Ech"i*na`ted, a. Etym: [L. echinatus. See Echinus.]

Defn: Set with prickles; prickly, like a hedgehog; bristled; as, an echinated pericarp.