ARCHING
Arch"ing, n.

1. The arched part of a structure.

2. (Naut.)

Defn: Hogging; — opposed to sagging.

ARCHIPELAGIC
Ar`chi*pe*lag"ic, a.

Defn: Of or pertaining to an archipelago.

ARCHIPELAGO Ar`chi*pel"a*go, n.; pl. -goes or -gos. Etym: [It. arcipelago, properly, chief sea; Gr. pref Plague.]

1. The Grecian Archipelago, or Ægean Sea, separating Greece from Asia Minor. It is studded with a vast number of small islands.

2. Hence: Any sea or broad sheet of water interspersed with many islands or with a group of islands.

ARCHIPTERYGIUM
Ar*chip`te*ryg"i*um, n. Etym: [NL., fr. Gr. pref. arch-) + (Anat.)