. Chemistry: Alternative term for asphalt.

2. Mechanics: Distance between two adjacent teeth of a gear or two adjacent threads of a screw or bolt.

3. Physics: Highness or lowness of sound characterized by the frequency producing it.

4. Travel industry: Leg room, the space between two seats, one in front of the other. Also called seat pitch.

5. Typography: Number of characters per inch (cpi) of a monospace (having equal space between all adjacent characters) font, such as Pica or Courier, used in older typewriters.

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