ambigram

[ am-bi-gram ]

noun

1. a representation, typically of a word or number, that when viewed upside down or in mirror image forms the same word or number, or a different word or number, either coincidentally due to the natural form of the characters, as with “swims” or “dollop,” or intentionally, using calligraphy or graphic design.

Word History and Origins

Origin of ambigram¹

ambi- ( def ) + -gram ¹( def ); coined by U.S. cognitive scientist and physicist Douglas R. Hofstadter (born 1945) in his anthology Metamagical Themas (1985)

Example Sentences

The date is also interesting because depending on the way its written, it may form a palindrome, or even an ambigram.

From Fox News

If you do it artfully, you can turn almost any word into an ambigram.”

From New York Times