hexameter (hĕksămˈətər) [key] [Gr., = measure of six], in prosody, a line to be scanned in six feet (see versification). The most celebrated hexameter measure is dactylic, which was the meter for most Greek and Latin poetry. In dactylic hexameter each foot may have a long syllable followed by two shorts, except the last, which has only two syllables, the first being long; any of the first four feet may have two long syllables. The origin of the dactylic hexameter is not known, but it appears first, and in its purest form, in Homer. Classical epic poets thereafter, including Vergil, used this meter, and it was extended to didactic and satirical literature, as in the works of Lucretius and Martial. In modern languages the only possible substitute for the quantitative differences that were essential to classical meters is in the stress accent; hence we have a noticeably singsong effect when English dactylic hexameter is read aloud. One of the few examples of its use in modern languages is in Longfellow's Evangeline: "Thís is the fórest priméval. The múrmuring pínes and the hémlocks." A famous dactylic hexameter in English prose is in Isa. 14.12: "Hów art thou fállen from héaven, O Lúcifer, són of the mórning!" The alexandrine is the only important modern hexameter.
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