Out of boredom, I've been reading up on place of articulation lately and learning about the different ways that one place can be called depending on the language, family, or academic discipline. This started by learning about Aboriginal Australian peripheral consonants and the way they group their coronal phonemes into laminal and apical pairs, which seemed super cool to me, but as I've read some of the terminology has gotten confusing—particularly the term domal. The Wikipedia articles for laminal, retroflex, and palatal consonants all say that domal has occasionally been used for retroflex/palatal places of articulation via terms like apico-domal and lamino-domal, but they lack any sources referring to such, and subsequent research has turned up virtually nothing. Most sources online seem to begin and end with defining "domal" as an alternate term for retroflex consonants, and any language I've found that has been described as having a domal place of articulation (Damin, Pintupi, Warlmanpa) only use the term "apico-domal" as a stand in for retroflex with seemingly no languages using the term "lamino-domal" despite Wikipedia claiming it to be attested. I understand that Wikipedia probably isn't the most reliable source on linguistics, but other websites do mention the use of "domal" as a synonym for retroflex, so I'm assuming that it's not entirely erroneous, I just don't really know where to start.
With all that being said, I guess my questions are:
- Where did the term domal come from?
- What languages/language families/linguistic disciplines tend to use it the most?
- Is it still used, or is it obsolete in linguistics?
And particularly: does "domal" refer to the dome of the mouth (as in the alveolar ridge/soft palate) or the domed shape that the tongue makes for retroflex consonants? This last question is what I've really been trying to find out before falling into the rabbit hole above.
Thank you for any responses!