Ivbiosakon language

Ivbiosakon
Aoma
Native to	Nigeria
Region	Edo State
Native speakers	(100,000 cited 1987)[1]
Language family	Niger–Congo Atlantic–Congo Volta–Niger yeai Edoid North-Central Edo Ivbiosakon
Dialects	Emai Ora Iuleha Ivhimion ?Ihievbe (Isewe)
Language codes
ISO 639-3	ema – inclusive code Individual code: ihi – Ihievbe
Glottolog	emai1241[2]

Ivbiosakon, or Aoma, is an Edoid language of Edo State, Nigeria. The dialect names Ora and Emai are also used for the language.

Phonology

Aoma has a rather reduced system, compared to proto-Edoid, of seven vowels; these form two harmonic sets, /i e a o u/ and /i ɛ a ɔ u/.^[3]

It has only one clearly phonemic nasal stop, /m/; [n] alternates with [l], depending on whether the following vowel is oral or nasal. (The other approximants, /ɹ j w h/, are also nasalized in this position: see Edo language for a similar situation.) The inventory is:^[4]

	Labial	Alveolar	Palatal	Velar	Labio-velar	Glottal
Nasal	m	l [n]
Plosive	p  b	t  d		k  ɡ	k͡p  ɡ͡b
Fricative	f  v	s  z		x  ɣ
Trill		r
Approximant		ɹ	j		w	h

References

1. Ivbiosakon at Ethnologue (18th ed., 2015)
   Ihievbe at Ethnologue (18th ed., 2015)
2. Hammarström, Harald; Forkel, Robert; Haspelmath, Martin; Bank, Sebastian, eds. (2016). "Emai-Iuleha-Ora". Glottolog 2.7. Jena: Max Planck Institute for the Science of Human History.
3. Archangeli & Pulleyblank, 1994. Grounded phonology, p 181ff
4. Jeff Mielke, 2008. The emergence of distinctive features, p 136ff;
   also found in Variation and gradience in phonetics and phonology, p 26ff