morphotonemicadj.
/ˌmɔːfəʊtəˈniːmɪk/, U.S. /ˈˌmɔrfoʊdəˈnimɪk/ Linguistics.
Involving or relating to a change in the form of a tone resulting from the grammatical environment.
ΚΠ
1949 W. E. Welmers in Stud. in Linguistics 7 i. 1 The analysis is not necessarily tonemic but perhaps only morphotonemic until the tonal facts are later dissociated from considerations of morpheme boundaries.
1975 Language 51 563 The tone of the immediately preceding vowel is changed to high or mid due to morphotonemic processes.
1992 A. Akinlabi in Res. Yoruba Lang. & Lit. Mar. 68 Processes such as L→M which have been regarded as morphotonemic can be accounted for at a lower level of phonology with simple phonological rules.
This is a new entry (OED Third Edition, December 2002; most recently modified version published online March 2022).
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adj.1949