đĩa quang

== Vietnamese == === Etymology === đĩa (“disc, plate”) +‎ quang (“optics, light”), calque of Chinese 光碟 (guāngdié). === Pronunciation === (Hà Nội) IPA(key): [ʔɗiə˦ˀ˥ kwaːŋ˧˧] (Huế) IPA(key): [ʔɗiə˧˨ kwaːŋ˧˧] (Saigon) IPA(key): [ʔɗiə˨˩˦ waːŋ˧˧] === Noun === đĩa quang optical disc