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procercoid

American  
[proh-sur-koid] / proʊˈsɜr kɔɪd /

noun

Zoology.
  1. an elongate larval stage of some tapeworms that usually develops in the body of a freshwater copepod.


Etymology

Origin of procercoid

1925–30; pro- 2 + Greek kérk ( os ) tail + -oid