Who came up with the term president?
We do not know the name of the individual who first proposed this title. Early drafts of the Constitution referred simply to the "Executive" at first leaving open even whether it should be one man or several, though the latter notion was soon dropped. The word "President" first appears in the report of the Committee of Detail, submitted to the full Convention on August 6, 1787. This committee consisted of John Rutledge (SC), Edmund Randolph (Va), James Wilson (Pa), Oliver Ellsworth (Conn) and Nathaniel Gorham (Mass). The terms Speaker, Congress, Senate, House of Representatives, and Supreme Court also appear for the first time in this report, along with expressions like "We, the People", "State of the Union", "privileges and immunities", "necessary and proper", and reference to "vacancies" in House or Senate, "disability" in the Presidency, and "extraordinary occasions" on which Congress might be assembled. So this group of relatively obscure men made a big impact, semantically at least, on the future of the United States, coining many expressions in everyday use to the present time. (All the above is taken from Ch11 of Clinton Rossiter "The Grand Convention", well worth a read if you are interested in this subject.)
Theodore Roosevelt was the president who called the office of President (the position, that is, not the Oval Office room specifically) of President a "bully pulpit". Lots of Presidents have "used it effectively" (Lincoln, FDR, and JFK definitely used their Presidencies to promote their own ideals, for example), but it was Theodore Roosevelt who came up with the term.
A term equals 4 years. A president can serve up to 2 terms meaning 8 years. For example. President Obama has been president for almost 4 years. His term is almost up. They will have an election in November and if President Obama wins, he will be president for four more years. Only 2 terms is the most for a president.
The typical term (or time-in-office) for the President of the United States of America is four years. The President can run for a second term, and if he/she (I say "he/she" as an example meaning "depending on who the President is") is elected, once the four years of that second term are up, he/she cannot run for President again as per regulations stating that President-elect can only serve two terms in office.
FDR was elected to 4 terms. After he died during his fourth term, the Congress passed a law. The President of the USA can serve no more than 2 full terms as President (if he/she is Vice President to a President that dies in office, then they can serve the remaining term as President and serve an additional two terms in office). Therefore President Harry Truman could serve two full terms as President in addition…
The president of the US serves a term of 4 years. He can be elected to a second term, and his total term limit is 10 years : up to two years succeeding another President, then a maximum of two four-year terms. If he serves more than two years of another president's term, he can have only one elected term.