Mark missing from "naive"

• A diacritical mark (two dots) placed over a vowel in German to indicate a change in sound
• The two dots in "naïve"
• Umlaut doppelganger
• The two dots in "naГЇve"
• "The two dots in "na"
• Umlaut lookalike

WordNet Word definitions in WordNet
n. a diacritical mark (two dots) placed over a vowel in German to indicate a change in sound [syn: umlaut , diaeresis ] [also: diereses (pl)]

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
also diaeresis , 1610s, "sign marking the division of a diphthong into two simple sounds," from Late Latin diaeresis , from Greek diairesis "division," noun of action from diairein "to divide, separate," from dia- "apart" (see dia- ) + hairein "to take" ...

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Dieresis \Di*er"e*sis\, n. [NL.] Same as Di[ae]resis .