Definitions

from The Century Dictionary.

  • noun One of a series of decimal submultiples of the meter: as, metro -sixteen, the sixteenth of this series of metros. See the extract and uno.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A metropolitan area.
  • adjective Metropolitan.
  • noun An underground railway.
  • noun A train that runs on such an underground railway.
  • noun An urban rapid transit light railway
  • noun A train that runs on such a railway.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun an electric railway operating below the surface of the ground (usually in a city)

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

French métro, apocopic form of métropolitain, from the Ancient Greek roots μήτηρ (meter, "mother") + πόλις (polis, "city").

from Wiktionary, Creative Commons Attribution/Share-Alike License

Abbreviation of metropolitan.

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