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equisetoid

[ek-wuh-see-toid]

noun

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

Origin of equisetoid

< New Latin Equiset(um) equisetum + -oid

Also called sphenopsid.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019