quadriradiate adjective 1noun 1forms 1 adjective1 •Having or consisting of four rays or similar radiating parts. noun1 •A quadriradiate sponge-spicule.The skeleton is composed of triradiates arranged in a few confused layers in the walls of ascon-tubes. In addition to the triradiates, a few quadriradiates can occasionally be found. — 2023 formsquadriradiates
