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infraorder

American  
[in-fruh-awr-der] / ˈɪn frəˌɔr dər /

noun

plural

infraorders
  1. Biology. a group of related organisms within a suborder.


infraorder Scientific  
/ ĭnfrə-ôr′dər /
  1. A taxonomic category of related organisms ranking below a suborder and containing one or more families.