sphenopsid

play
noun sphe·nop·sid \sfi-ˈnäp-səd\

Definition of sphenopsid

  1. :  any of a class or division (Sphenopsida or Sphenophyta) of primitive vascular plants characterized by jointed ribbed stems, small leaves usually in whorls at distinct stem nodes, and sporangia in sporangiophores and made up of the horsetails and extinct related forms

Origin and Etymology of sphenopsid

ultimately from Greek sphēn wedge + New Latin -opsis


First Known Use: 1957


Learn More about sphenopsid


Seen and Heard

What made you want to look up sphenopsid? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

clearly seen through or understood

Get Word of the Day daily email!