What does SP stand for?

Steam Powered

This definition appears very rarely and is found in the following Acronym Finder categories:

Science, medicine, engineering, etc.

Other Resources:

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Starting Price (betting) State Paper Office (UK) State Park State Patrol State Police State Primary State Prison Static Pressure Static Propagation Statistical Power		Steam Propulsionman (USN Rating) Stevens Pass (Washington) Stile Project Stock Point Stopping Power (various meanings) Stored Procedure Stormpike Graveyard (World of Warcraft battleground slang) Strada Provinciale (Italian road) Straight Pride Strategic Plan

Samples in periodicals archive:

There is debate as to whether the steam powered road vehicles of Nicolas Joseph Cugnot can be categorized as automobiles.

Automobiles Throughout History

Before electricity became widespread, steam powered most factories, often with a system of shafts, pulleys and belts that could be connected to a wide variety of machines.

Steam power

The British has recently been working hard on a steam powered car that they believe is another step toward the future.

The Possibility of Steam Powered Automobiles