ambigramn.
/ˈambᵻɡram/, U.S. /ˈæmbəˌɡræm/ A typographical design consisting of text modified in such a way that it can be read in multiple orientations, as in mirror image, inverted, or when rotated.The word or words appearing may be the same, or may differ in each orientation.
ΚΠ
1985 D. R. Hofstadter Metamagical Themas xxiv. 584 The esthetically pleasing activity of doing ambigrams, where shapes must be concocted that are poised exactly at the midpoint between two interpretations.
1992 N.Y. Rev. Bks. 3 Dec. 35/2 Ambigrams..exploit the mind's surprising ability to recognize words even when their letters are distorted in ambiguous ways.
2009 V. Hemingson Alphabets & Scripts 106 An increasingly popular motif in tattoo parlours is the ambigram.
This entry has been updated (OED Third Edition, March 2020; most recently modified version published online December 2021).
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n.1985