December 13, 2008

What Are Palindromes?

The word palindrome is derived from the Greek palíndromos, meaning running back again (palín = AGAIN + drom–, drameîn = RUN). A palindrome is a word or phrase which reads the same in both directions. Some simple examples are:

RACECAR
DEED
LEVEL
PIP
ROTOR
CIVIC
POP
MADAM
EYE
NUN
RADAR
TOOT

Words like LIVE and STRAW (which read EVIL and WARTS backwards) are not themselves palindromes but the "phrases" LIVE EVIL and STRAW WARTS are. A palindrome is not necessarily a single word.

The longest single English word in common usage which is a palindrome is REDIVIDER, although the contrived chemical term DETARTRATED is two letters longer. In Finnish there is a 25-letter palindromic word: SOLUTOMAATTIMITTAAMOTULOS which means the result from a measurement laboratory for tomatoes, although technically it is a compound of four words. There is also the equally long SAIPPUAKUPPINIPPUKAUPPIAS which means soap cup trader.



When creating reversible sentences, it is usually accepted that punctuation and word spacings are ignored, and so the famous MADAM, I'M ADAM is a valid palindrome.

Palindrome Varieties

There are two other types of palindrome, although neither is particularly common. The first is the word-unit palindrome. As the name suggests, these are palindromes in which the words form the same sentence in either direction, e.g. WOMEN UNDERSTAND MEN; FEW MEN UNDERSTAND WOMEN. Occasionally these are also traditional palindromes, such as in I DID, DID I? but this only happens when each word is itself a traditional palindrome.

The other kind of palindrome is the mirrored palindrome. These are palindromes which are graphically reversible. Not all letters in mirrored palindromes necessarily have symmetry about a vertical axis (A, H, I, M, O, T, U, V, W, X) since some letters are (more or less) mirror images of others (e.g. L and J). Therefore a mirrored palindrome is not necessarily also a traditional palindrome. Punctuation and spaces cannot be ignored when creating mirrored palindromes. When reversed A TOYOTA becomes ATOYOT A which, strictly speaking, is not the same. WOT TOW, although fairly meaningless, is a valid mirrored palindrome. Of course, with this type of palindrome, it is important whether upper or lower case letters are used: bid is a mirrored palindrome, but BID is not.

Find the palindromes:

http://www.free-online-word-search-puzzles.com/palindromes.gif


Source: Fun with words

3 comments:

$. M. K. said...

Dear Polly,
That video is cool!
If you go to ;Y tambien 2 Huevos duros You will watch and listen what Bob said about it.

On the Croosword I found: Eye, kayak, peep, noon... there might be more but I'm kinda tired XD

Note: In spanish there are also palindromes such as Luz azul, amad a la dama or dábale arroz a la zorra el abad. Because do you speak spanish, don't you?

$. M. K. said...

I found a new one!!! ROTATOR. Awesome!! =D

Polly said...

Hello!! Thanks for visit my blog. Yes, yes, I speak spanish too.
:P But I'm from Malaga, do you know? ;)

Kisses!