Poetry is rhythmic language that combines sound and meaning. It should be read aloud so that the natural rhythm of the meter can be heard. Meter refers to the rhythmic pattern of syllables, which can be long or short. The length of a syllable is determined by factors like vowel quality, position, and elision. A line of poetry contains a sequence of metrical feet, which are groups of syllables that make up the basic unit of the meter. Common feet include the iamb, trochee, dactyl, and spondee. Scanning a poem involves analyzing its meter by identifying the pattern of long and short syllables in each foot.