Question: In what year did Grand Central Station become Grand Central Terminal?
About the article "Grand Central Terminal", section "Abstract".

Candidate passages:
Grand Central Station is widely used informally to refer to Grand Central Terminal, a major railroad terminal in New York City, or as a figure of speech to mean any very busy place.
It may also refer to: Grand Central – 42nd Street (New York City Subway), the New York City Subway station complex adjacent and attached to Grand Central Terminal.
Grand Central (IRT elevated station), a former station active 1878–1923 Grand Central Station (Chicago), a former train station in Chicago Grand Central Station (radio), a radio series running from 1937 to 1954 United States Postal Service office near Grand Central Terminal  
  Grand Central Airport, a general aviation airport in Midrand, South Africa  Grand Central Airport (United States), major location of early commercial air travel in California  Grand Central Parkway, in Queens, New York City  Grand Central Railway, British train operator running services between London, and Sunderland and Bradford  Grand Central Station (Chicago), former train station in Chicago  Grand Central Terminal, train terminal in Manhattan, New York City, USA  Grand Central – 42nd Street (New York City Subway), a New York City Subway station complex adjacent to Grand Central Terminal consisting of: * Grand Central – 42nd Street (IRT Lexington Avenue Line), serving the trains * Grand Central (IRT Flushing Line), serving the trains * Grand Central (IRT 42nd Street Shuttle), serving the train  
  Grand Central (store), former discount department store bought out by Fred Meyer in 1984  "Grand Central" (film), a 2013 French film  Grand Central Band, New Zealand Band  Grand Central Dispatch, computing technology from Apple Inc.  GrandCentral, VoIP service that was acquired by Google  Grand Central Hall, building in Liverpool, England  Unite Grand Central, student halls of residence also in Liverpool, England  Grand Central Records, independent record label based in Manchester, England  Grand Central Stockport, entertainment and leisure complex in Stockport, Greater Manchester, England  Grand Central Station (radio), series from 1937–1954  Hotel Grand Central Ltd, a Singaporean-based company that owns the Hotel Grand Chancellor group  Grand Central Publishing, a division of the Hachette Group United States Postal Service office near Grand Central Terminal  
The Grand Central Palace was an exhibition hall in New York City.
Built in 1911, the 13-story building was located on Lexington Avenue between 46th and 47th Streets, occupying the air rights over the railroad tracks leading into Grand Central Terminal.
The Palace was designed by Warren and Wetmore and Reed and Stem, who had collaborated on Grand Central Terminal.
It replaced the original Grand Central Palace, built in 1893 on Lexington Avenue between 43rd and 44th Streets and demolished by 1913 to make way for the Grand Central development after it had served as a temporary station during the building of the terminal.
The Palace was New York's main exposition hall until it closed in 1953.
Its location and the proximity of Grand Central Terminal spurred the construction of a hotel district in the area.
The new Grand Central Palace was demolished in 1964 to make way for 245 Park Avenue.  
  February 1 - New York City's Grand Central Terminal opens as the world's largest train station to date.