| − | '''Ablaut''' is a systematic change in a [[vowel]] in a [[word]] as part of that word's [[morphology]]. An example of ablaut in [[English]] is ''sing, sang, sung, song.''<ref>[http://www.merriam-webster.com/dictionary/ablaut Definition of Ablaut]</ref> | + | '''Ablaut''' is a systematic change in a [[vowel]] in a [[word]] as part of that word's [[morphology]]. An example of ablaut in [[English]] is ''sing, sang, sung, song.''<ref>[https://www.merriam-webster.com/dictionary/ablaut Definition of Ablaut]</ref> |