[z]→[m]Certainty: 4/5Commonality: 2/5

Nasalization Assimilation Indo-European Afro-Asiatic Hellenic

Voiced alveolar fricative to Bilabial nasal

The transformation of the voiced alveolar fricative [z] into the bilabial nasal [m] is primarily documented as a form of nasal assimilation in consonant clusters, where the sibilant adopts the nasal and labial features of a following segment.

Phonetic Effects

Nasal Assimilation, Labialization, Consonantalization Shift

Language Examples

Ancient Greek (Historical) Hellenic

Cluster [zm] (written as σμ)→[mː]— Historical assimilation where the sibilant before a nasal became nasalized or completely merged into the nasal sound.

Modern Arabic (Dialectal Sandhi) Afro-Asiatic

Final [z] before [m]→[m]— Occasional assimilation in rapid speech across word boundaries where the voiced fricative is absorbed into the following labial nasal.

Related Transformations

Alveolar nasal equivalent Inverse: Denasalization

More Nasalization Shifts

[ã] → [õ] — Raising [a] → [ã] — Assimilatory Nasalization [d] → [dʑ] — Palatalization [e] → [o] — Backing [ei] → [e] — Monophthongization

Sources & References

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