seventy-eight

noun

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.

adjective

4. amounting to 78 in number.

noun, plural 78s, 78’s.

1. an early type of shellac-based phonograph record that played at 78 revolutions per minute.