Editing Diphthong (section)

====Portuguese====
{{Main|Portuguese phonology}}
The Portuguese diphthongs are formed by the [[labio-velar approximant]] {{IPA|[w]}} and [[palatal approximant]] {{IPA|[j]}} with a vowel,<ref>{{Harvcoltxt|Faria|2003|p=7}}</ref> [[European Portuguese]] has 14 phonemic diphthongs (10 oral and 4 nasal),<ref name="ReferenceB">{{Harvcoltxt|Cruz-Ferreira|1995|p=92}}</ref> all of which are falling diphthongs formed by a vowel and a nonsyllabic high vowel. [[Brazilian Portuguese]] has roughly the same amount, although the European and non-European dialects have slightly different pronunciations ({{IPA|[ɐj]}} is a distinctive feature of some southern and central Portuguese dialects, especially that of Lisbon). A {{IPA|[w]}} onglide after {{IPA|/k/}} or {{IPA|/ɡ/}} and before all vowels as in ''quando'' {{IPA|[ˈkwɐ̃du]}} ('when') or ''guarda'' {{IPA|[ˈɡwaɾðɐ ~ ˈɡwaʁdɐ]}} ('guard') may also form rising diphthongs and [[triphthong]]s. Additionally, in casual speech, adjacent heterosyllabic vowels may combine into diphthongs and triphthongs or even sequences of them.<ref name="ReferenceC">{{Harvcoltxt|Barbosa|Albano|2004|p=230}}</ref>
{| class="wikitable" style="text-align:center;"
|+Falling diphthongs of Portuguese
!colspan="6"|oral
|-
!
! [[European Portuguese|EP]]<ref name="ReferenceB"/>
! [[Brazilian Portuguese|BP]]
!
! [[European Portuguese|EP]]
! [[Brazilian Portuguese|BP]]
|-
|''sai''||colspan=2|{{IPA|[aj]}}||''mau''||colspan=2|{{IPA|[aw]}}
|-
|''sei''||{{IPA|[ɐj]/[ej]}} ||{{IPA|[ej]}}||''meu''||colspan=2|{{IPA|[ew]}}
|-
|''anéis''
| colspan="2" |{{IPA|[ɛj]}}||''véu''||colspan=2|{{IPA|[ɛw]}}
|-
|colspan="3"| ||''viu''||colspan=2|{{IPA|[iw]}}
|-
|''mói''||colspan=2|{{IPA|[ɔj]}}||colspan="3"|
|-
|''moita''||colspan=2|{{IPA|[oj]}}||''dou''||colspan=2|{{IPA|[ow]}}
|-
|''fui''||colspan=2|{{IPA|[uj]}}||colspan="3"|
|-
!colspan="6"|nasal
|-
|''mãe'' ||rowspan=2|{{IPA|[ɐ̃j]}}||{{IPA|[ɐ̃j]}}||''mão''||colspan=2|{{IPA|[ɐ̃w]}}
|-
|''cem'' ||{{IPA|[ẽj]}}||colspan="3"|
|-
|''anões''||colspan=2|{{IPA|[õj]}}||colspan="3"|
|-
|''muita''||colspan=2|{{IPA|[ũj]}}||colspan="3"|
|}

In addition, phonetic diphthongs are formed in most Brazilian Portuguese dialects by the [[L-vocalization|vocalization]] of {{IPA|/l/}} in the syllable coda with words like ''sol'' {{IPA|[sɔw]}} ('sun') and ''sul'' {{IPA|[suw]}} ('south') as well as by yodization of vowels preceding {{IPAslink|s}} or its allophone at syllable coda {{IPA|[{{IPAplink|ʃ}} ~ {{IPAplink|ɕ}}]}} in terms like ''arroz'' {{IPA|[aˈʁojs ~ ɐˈʁo(j)ɕ]}} ('rice'),<ref name="ReferenceC"/> and {{IPAslink|z}} (or {{IPA|[{{IPAplink|ʒ}} ~ {{IPAplink|ʑ}}]}}) in terms such as ''paz mundial'' {{IPA|[ˈpajz mũdʒiˈaw ~ ˈpa(j)ʑ mũdʑiˈaw]}} ('world peace') and ''dez anos'' {{IPA|[ˌdɛjˈz‿ɐ̃nu(j)s ~ ˌdɛjˈz‿ɐ̃nuɕ]}} ('ten years').