"Triphthongal" Natural Recordings by Native Speakers
The word "triphthongal" refers to a vowel sound that is made by the combination of three vowel sounds pronounced in a sequence, typically /i/, /ɑ/, and /u/.
In linguistics, a triphthong is a three-terminal diphthong, which is a vowel sound that glides from one quality to another within a single syllable.
Here are 5 usage examples:
Thriving in three environments simultaneously, such as on land, in water, and in the air.
I could not find any information about the word "triphosgenes" in any dictionary or linguistic resource. It is possible that it is a misspelling or a non-existent word.
A triphylline is a medication that belongs to the class of xanthines. It is a relatively weak bronchodilator and has mild diuretic properties.
An aircraft with three pairs of wings, used especially in World War I, and sometimes more recently in aerial action films and animation.