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equisetoid

American  
[ek-wuh-see-toid] / ˌɛk wəˈsi tɔɪd /

noun

  1. any plant of the phylum or division Equisetophyta (or Sphenopsida), including the horsetails and many extinct species of the Carboniferous Period.


Etymology

Origin of equisetoid

< New Latin Equiset ( um ) equisetum + -oid