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| | Wikipedia: Spanish language |
 | | The voiced alveolar fricative /z/ (that was written 's' between vowels) merged with the voiceless /s/ (that was written 's', or 'ss' between vowels), now written 's' everywhere. |
 | | Voiced alveolar affricate /dz/ (that was written 'z') merged with the voiceless /ts/ (that was written 'ç,ce,ci'), and then /ts/ evolved into the interdental /T/, now written 'z,ce,ci'. |
 | | The voiced postalveolar fricative /Z/ (that was written 'j,ge,gi') merged with the voiceless /S/ (that was written 'x', as in 'Quixote'), and then /S/ evolved by the 17th century into the modern velar sound /x/, now written 'j,ge,gi'. |
| www.factbook.org /wikipedia/en/s/sp/spanish_language.html (2719 words) |
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