plural of main deck

(astronomy) Synonym of asteroid belt; the main asteroid belt in the Solar System located roughly between the orbits of the planets Mars and Jupiter.

(nautical, military) The primary belt of armor protecting the sides of a warship above and slightly below the waterline.

plural of main sequence

A suburban village in the Metropolitan Borough of North Tyneside, Tyne and Wear, England (OS grid ref NZ3367).

A bay of the Atlantic, an embayment on the coast of New England, United States, that separates the Bay of Fundy from the Atlantic Ocean.

Alternative letter-case form of main belt; Ellipsis of Main Asteroid Belt.; A region of Solar System

(military) A body of troops comprising the chief guard units, especially a unit of cavalry on the wing of a camp towards the enemy, or a group of soldiers in a fortress responsible for dealing with disturbers of the peace.

An older English form of Frankfurt am Main.

(theater) Synonym of front curtain