'Pentachenium' definitions:

Definition of 'Pentachenium'

From: GCIDE
  • Pentachenium \Pen`ta*che"ni*um\, n. [NL. See Penta-, and Achenium.] (Bot.) A dry fruit composed of five carpels, which are covered by an epigynous calyx and separate at maturity. [1913 Webster]