:Mora:

Pronunciation GB: ˈmɔːrə GA: ˈmoʊrə

A unit of quantity or duration, often symbolised μ. Morae can be viewed as components of the syllable. A long vowel, diphthong, or short vowel plus a coda consist of two morae, whereas a short vowel consists of one mora. Onset consonants do not have a mora value. An example from Japanese simbun (= “newspaper”):