SG Heritage Dictionary

Pentagon [Noun] Webster's Dictionary 1828

1. In geometry, a figure of five sides and five angles.

2. In fortification, a fort with five bastions.

Pentagon [Noun] Webster's Dictionary 1913

A plane figure having five angles, and, consequently, five sides; any figure having five angles.

Pentagonal [\N] Webster's Dictionary 1828

1. PENTAG'ONAL

2. PENTAG'ONOUS, adjective Having five corners or angles.

Pentagonal [Adjective] Webster's Dictionary 1913

Having five corners or angles.

Pentagonally [Adverb] Webster's Dictionary 1913

In the form of a pentagon; with five angles.

Pentagonous [Adjective] Webster's Dictionary 1913