Trema
WordNet
noun
(1) An evergreen tree of the family Ulmaceae that grows in tropical America and Africa and Asia
WiktionaryText
Etymology
Greek τρῆμα used for the dots on dice; via Dutch trema and French tréma.
Noun
- a diacritic consisting of two dots ( ¨ ) placed over a letter, used among other things to indicate umlaut or diaeresis.
- The Trema is a diacritic that I have to add to the letter like an accent. So to catalog correctly your system has to offer you Trema and Umlaut. — Donald Pisani, http://groups.google.com/groups?selm=MAPI.Id.0016.00627770692020203737363630303546%40MAPI.to.RFC822&output=gplain
- If the tone is not falling, than a macron or trema is written above the vowel: màtö. — Rob Nierse, http://listserv.brown.edu/archives/cgi-bin/wa?A2=ind9909D&L=conlang&P=R8167