Alaska /əˈlæs.kə/ noun2 •A state of the United States, formerly a territory. Capital: Juneau. Largest city: Anchorage. Postal code: AK.We have no available sources of information concerning the vegetation northward of the peninsula of Alaska from Bristol Bay, in 58°, to the mouth of the Kwichpak, in latitude 63°. — 1869 •Ellipsis of baked Alaska. formsAlaskas · alaskas