Californian

a state in the W United States, on the Pacific coast. 158,693 sq. mi. (411,015 sq. km).
Capital: Sacramento.
Abbreviation: CA (for use with zip code), Cal., Calif.
Gulf of, an arm of the Pacific Ocean, extending NW between the coast of W Mexico and the peninsula of Baja California. About 750 miles (1207 km) long; 62,600 sq. mi. (162,100 sq. km).
Contemporary Examples

The Week in Death: George Jacobs, Sinatra’s Domestic Confidant The Telegraph February 22, 2014
California Sinkin’: What Rising Sea Levels Will Mean for the Golden State Alex Klein June 29, 2012
Jerry Brown’s Castro Trouble A. L. Bardach October 4, 2010
Llyn Foulkes Changes Tacks Blake Gopnik July 30, 2013
Josh Brolin’s Cowboy Moment Isabel Wilkinson August 29, 2012

Historical Examples

Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 Various
The Crusade of the Excelsior Bret Harte
Problems of Expansion Whitelaw Reid
The Art of Disappearing John Talbot Smith
A Synopsis of the North American Lagomorpha E. Raymond Hall

adjective
of or relating to California or its inhabitants
noun
a native or inhabitant of California
noun
a state on the W coast of the US: the third largest state in area and the largest in population; consists of a narrow, warm coastal plain rising to the Coast Range, deserts in the south, the fertile central valleys of the Sacramento and San Joaquin Rivers, and the mountains of the Sierra Nevada in the east; major industries include the growing of citrus fruits and grapes, fishing, oil production, electronics, information technology, and films. Capital: Sacramento. Pop: 35 484 453 (2003 est). Area: 411 015 sq km (158 693 sq miles) Abbreviation Cal., Calif., (with zip code) CA
Gulf of California, an arm of the Pacific Ocean, between Sonora and Lower California

Amadis de Gaula … set a fashion: all later Spanish writers of books of chivalry adopted the machinery of Amadis de Gaula. Later knights were not less brave (they could not be braver than) Amadis; heroines were not less lovely (they could not be lovelier) than Oriana; there was nothing for it but to make the dragons more appalling, the giants larger, the wizards craftier, the magic castles more inaccessible, the enchanted lakes deeper. Subsequent books of chivalry are simple variants of the types in Amadis de Gaula: Cervantes made his barber describe it as ‘the best of all books of this kind.’ This verdict is essentially just. Amadis de Gaula was read everywhere, especially in the French version of Herberay des Essarts. It was done into Hebrew during the sixteenth century, and attracted readers as different as St Ignatius of Loyola and Henry of Navarre. Its vogue perhaps somewhat exceeded its merit, but its merits are not inconsiderable. [James Fitzmaurice-Kelly, “Spanish Literature,” 1922 edition]

Where Montalvo got the name and what it means, if anything, is a mystery. Californian is attested from 1785. The element Californium (1950) was named in reference to University of California, where it was discovered.

Note: During the California gold rush tens of thousands of people poured into California in search of gold. It is sometimes called the “Golden State.” (See forty-niners.)

Note: California is the most populous state. It is known for its earthquakes, high-tech industries (see Silicon Valley), and agriculture.

Note: The state is famous for all the fads and ideas that originate there, many of which are considered strange or eccentric.