Ottava Rima is a poetic form that originated in Italy and is characterized by eight lines of iambic pentameter, followed by a ninth line of iambic hexameter. This form is often used for narrative poetry, such as epic poems and satires. Synonyms for Ottava Rima include "eight-line stanza," "octave," and "octet." Other poetic forms that are similar to Ottava Rima include the sonnet and the sestina. While Ottava Rima has been used by poets throughout history, it remains popular today for its versatility and ability to convey complex themes and stories within a structured form.