1. 
   iambic tetrameter
   (from the article `tetrameter`) ...a stressed one, as in the word {breve}be-cause ), trochees (a stressed syllable followed by an unstressed one, as in the word ti-ger),{breve} or a ...
   Found op http://www.britannica.com/eb/a-z/i/1
   
   
2. 
   Iambic tetrameter
   Iambic tetrameter is a meter in poetry. It refers to a line consisting of four iambic feet. The word "tetrameter" simply means that there are four feet in the line; iambic tetrameter is a line comprising four iambs. Some poetic forms rely upon iambic tetrameter: triolet, Onegin stanza, Memoriam sta...
   Found op http://en.wikipedia.org/wiki/Iambic_tetrameter
   
   

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