pentagonal, pentagon all

[English form of a pentagon. pentagon; -al.] Having five angles or corners; in "But the bryar which sends forth shoots and prickles from its angles maintains its pentagon all figure."Browne: Garden of Cyrus, ch. ii. pěn-tăg-on-al-ly, adv. [Eng. pentagonal; -ly.] With five angles. "The flowers before explication are pentagonally wrapped up with some resemblance of the blatt a or moth."-Browne: Garden of Cyrus, ch. ii. Pentagonal, five-angled. pěn-tăg-on-ous, a. [English pentagon; -ous.]