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.
Standards. A Palindrome is a word, phrase or sequence which reads the same in both directions. Derived from the Greek pal ndromos, meaning running back again, a palindrome reads the same forward and backward, with general allowances for adjustments to punctuation and word dividers. There are many types of palindromes from many fields including math, language arts, history, music, poetry and biology.