High tone spread
tonal spread
[H] [L .] > [H .] [L] / (AM _) (noun class prefix _)
6.1.3. High tone spread (HTS)
Within a tonal phrase, if the initial word ends on a H-toned syllable, and the subsequent word begins with a L-toned syllable, the H tone spreads over the word boundary, and the L toneme of the second word shrinks or is delinked.