By definition, pi is the ratio of the circumference of a circle to its diameter. Pi is always the same number, no matter which circle you use to compute it. For the sake of usefulness people often need to approximate pi.
Definition and Examples of Literary Terms. The term palindrome is derived from two Greek words âpalinâ means again and âdromosâ means way or direction. It is defined as a number, a word, a sentence, a symbol or even signs that can be read forward as well as backward or in reserve order with the same effects and meanings.
The Worldâs Longest Palindromes. Retired Article â¢ written by Daniel Lew. A palindrome is a word, phrase, verse or sentence that reads the same backward or forward. In 2002, Peter Norvig read that Dan Hoey had created a computer program that had generated a 540 word palindrome in 1984. Thinking he could do one better, Norvig created his own version of the program.