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Having the shape of a cross. examples
plural cruciforms
(genetics) A cross shape in DNA; a Holliday junction. examples
Any emblem in the shape of a cross. quotations examples
Michael Eaton has discovered that if you visit its websites you will be warned: "Royal Mail, the Royal Mail Cruciform and the colour red are registered trademarks of Royal Mail Group plc."
2005, New Scientist, volumes 187-188, page 72