sesquisyllabic
Adjective
Meaning
(of a word) Consisting of a minor syllable plus a full syllable.
(of a language) Characterized by such words, as Cambodian or Burmese.
Source: en.wiktionary.orgExamples
Such words have been described as sesquisyllabic (i.e. as having one-and-a-half syllables).
Typology The Austroasiatic languages are well known for having a "sesquisyllabic" pattern, with basic nouns and verbs consisting of a reduced minor syllable plus a full syllable.