senariusPronunciation: /sɪˈnɛːrɪəs/Definition of senarius noun (plural senarii /-ɪiː, -ɪʌɪ/) Prosody a verse of six feet, especially an iambic trimeter. Origin: mid 16th century: from Latin (see senary)senarius in other Oxford dictionaries Definition of senarius in the US English dictionary