Metre (poetry) in the context of "Alliterative verse"

Poetry (from the Greek word poiesis, "making") is a form of literary art that uses aesthetic and often rhythmic qualities of language to evoke meanings in addition to, or in place of, literal or surface-level meanings. Any particular instance of poetry is called a poem and is written by a poet. Poets use a variety of techniques called poetic devices, such as assonance, alliteration, consonance, euphony and cacophony, onomatopoeia, rhythm (via metre), rhyme schemes (patterns in the type and placement of a phoneme group) and sound symbolism, to produce musical or other artistic effects. They also frequently organize these devices into poetic structures, which may be strict or loose, conventional or invented by the poet. Poetic structures vary dramatically by language and cultural convention, but they often rely on rhythmic metre: patterns of syllable stress or syllable (or mora) weight. They may also use repeating patterns of phonemes, phoneme groups, tones, words, or entire phrases. Poetic structures may even be semantic (e.g. the volta required in a Petrachan sonnet).

Most written poems are formatted in verse: a series or stack of lines on a page, which follow the poetic structure. For this reason, verse has also become a synonym (a metonym) for poetry. Some poetry types are unique to particular cultures and genres and respond to characteristics of the language in which the poet writes. Readers accustomed to identifying poetry with Dante, Goethe, Mickiewicz, or Rumi may think of it as written in lines based on rhyme and regular meter. There are, however, traditions, such as Biblical poetry and alliterative verse, that use other means to create rhythm and euphony. Other traditions, such as Somali poetry, rely on complex systems of alliteration and metre independent of writing and have been described as structurally comparable to ancient Greek and medieval European oral verse. Much modern poetry reflects a critique of poetic tradition, testing the principle of euphony itself or altogether forgoing rhyme or set rhythm. In first-person poems, the lyrics are spoken by an "I", a character who may be termed the speaker, distinct from the poet (the author). Thus if, for example, a poem asserts, "I killed my enemy in Reno", it is the speaker, not the poet, who is the killer (unless this "confession" is a form of metaphor which needs to be considered in closer context – via close reading).

Prose is language that follows the natural flow or rhythm of speech, ordinary grammatical structures, or, in writing, typical conventions and formatting. Thus, prose ranges from informal speaking to formal academic writing. Prose differs most notably from poetry, which follows some type of intentional, contrived, artistic structure. Poetic structures vary dramatically by language; in English poetry, language is often organized by a rhythmic metre and a rhyme scheme.

The ordinary conversational language of a region or community, and many other forms and styles of language usage, fall under prose, a label that can describe both speech and writing. In writing, prose is visually formatted differently than poetry. Poetry is traditionally written in verse: a series of lines on a page, parallel to the way that a person would highlight the structure orally if saying the poem aloud; for example, poetry may end with a rhyme at the end of each line, making the entire work more melodious or memorable. Prose uses writing conventions and formatting that may highlight meaning—for instance, the use of a new paragraph for a new speaker in a novel—but does not follow any special rhythmic or other artistic structure.

Narrative poetry is a form of poetry that tells a story, often using the voices of both a narrator and characters; the entire story is usually written in metered verse. Narrative poems do not need to rhyme. The poems that make up this genre may be short or long, and the story it relates to may be complex. It is normally dramatic, with various characters. Narrative poems include all epic poetry, and the various types of "lay", most ballads, and some idylls, as well as many poems not falling into a distinct type.

Some narrative poetry takes the form of a novel in verse. An example of this is The Ring and the Book by Robert Browning. In terms of narrative poetry, romance is a narrative poem that tells a story of chivalry. Examples include the Romance of the Rose or Tennyson's Idylls of the King. Although those examples use medieval and Arthurian materials, romances may also tell stories from classical mythology. Sometimes, these short narratives are collected into interrelated groups, as with Chaucer's The Canterbury Tales. So sagas include both incidental poetry and the biographies of poets.

A syllable is a basic unit of organization within a sequence of speech sounds, such as within a word, typically defined by linguists as a nucleus (most often a vowel) with optional sounds before or after that nucleus (margins, which are most often consonants). In phonology and studies of languages, syllables are often considered the "building blocks" of words. They can influence the rhythm of a language: its prosody or poetic metre. Properties such as stress, tone, and reduplication operate on syllables and their parts. Speech can usually be divided up into a whole number of syllables: for example, the word ignite is made of two syllables: ig and nite. Most languages of the world use relatively simple syllable structures that often alternate between vowels and consonants.

Despite being present in virtually all human languages, syllables still have no precise definition that is valid for all known languages. A common criterion for finding syllable boundaries is native-speaker intuition, but individuals sometimes disagree on them.

In linguistics, syllable weight is the concept that syllables pattern together according to the number and/or duration of segments in the rime. In classical Indo-European verse, as developed in Greek, Sanskrit, and Latin, distinctions of syllable weight were fundamental to the meter of the line.

A verse is formally a single metrical line in a poetic composition. However, verse has come to represent any grouping of lines in a poetic composition, with groupings traditionally having been referred to as stanzas.

Verse in the uncountable (mass noun) sense refers to poetry in contrast to prose. Where the common unit of verse is based on meter or rhyme, the common unit of prose is purely grammatical, such as a sentence or paragraph.

A mora (pl. morae or moras; often symbolized μ) is a smallest unit of timing, equal to or shorter than a syllable, that theoretically or perceptually exists in some spoken languages in which phonetic length (such as vowel length) matters significantly. For example, in the Japanese language, the name of the city Ōsaka (おおさか) consists of three syllables (O-sa-ka) but four morae (O-o-sa-ka), since the first syllable, Ō, is pronounced with a long vowel (the others being short). Thus, a short vowel contains one mora and is called monomoraic, while a long vowel contains two and is called bimoraic. Extra-long syllables with three morae (trimoraic) are relatively rare. Such metrics based on syllables are also referred to as syllable weight. In Japanese, certain consonants also stand on their own as individual morae and thus are monomoraic.

The term comes from the Latin word for 'linger, delay', which was also used to translate the Greek word χρόνος : chrónos ('time') in its metrical sense.