WordReference Random House Unabridged Dictionary of American English © 2020
sev•enty-eight,  (sevən tē āt),USA pronunciation n. 
  1. a cardinal number, 70 plus 8.
  2. a symbol for this number, as 78 or LXXVIII.
  3. a set of this many persons or things.

  1. amounting to 78 in number.

78  (sevən tē āt),USA pronunciation n., pl.  78s, 78's.
  1. Sound Reproductionan early type of shellac-based phonograph record that played at 78 revolutions per minute.
  • 1950–55


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