Noun
IHP (plural IHPs)
(numismatic slang) Initialism of Indian head penny.
Indicated horsepower (ihp) Indicated horsepower (ihp) is the theoretical power of a reciprocating engine if it is completely frictionless in converting the expanding gas energy (piston pressure × displacement) in the cylinders. Source: Internet
Attendees to the IHP should be able to spend their time learning and interacting—not trying to find their way around the IHP,” said Harry P. Pappas, Founder and CEO of IHA. Source: Internet