sciuroid adjective 2noun 1forms 3 adjective2 •Of or pertaining to the taxonomic family Sciuridae.A sciuroid rodent to farmers well known— He is rather destructive to crops— Is apposite, novel and ready to hand As arms of the "Issue of Ops" — 1913 •Resembling the tail of a squirrel, as branches which are close and dense, or spikes of grass like barley.Plants dioceious, in habit comparable to Breutelia, Primary stem creeping, naked, secondary stems arcuate, sciuroid, simple, branching or producing stolons. — 1997 noun1 •Any rodent from the family Sciuridae.These findings are contrary to the opinion that sciuroids are relatively archaic forms, based on their cuspidate dentition. — 2013 formssciuroids · more sciuroid · most sciuroid