Webster's English Dictionary

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parallelism

par.al.lel.ism \'par-*-.lel-.iz-*m, -l*l-\ n 1: the quality or state of 
   being parallel  2: RESEMBLANCE, CORRESPONDENCE  3: recurrent syntactical 
   similarities introduced for rhetorical effect  4: a theory that mind and 
   matter accompany one another but are not causally  related 5: the 
   development of similar new characters by two or more related organis ms in 
   response to similarity of environment