POLYGONACEOUS
Pol`y*go*na"ceous, a. Etym: [See Polygonum.] (Bot.)
Defn: Of or pertaining to a natural order of apetalous plants (Polygonaceæ), of which the knotweeds (species of Polygonum) are the type, and which includes also the docks (Rumex), the buckwheat, rhubarb, sea grape (Coccoloba), and several other genera.
POLYGONAL
Po*lyg"o*nal, a.
Defn: Having many angles. Polygonal numbers, certain figurate numbers. See under Figurate.
POLYGONEUTIC
Pol`y*go*neu"tic, a. Etym: [Poly- + Gr. (Zoöl.)
Defn: Having two or more broods in a season.
POLYGONOMETRY
Pol`y*go*nom"e*try, n. Etym: [Polygon + -metry.]
Defn: The doctrine of polygons; an extension of some of the principles of trigonometry to the case of polygons.
POLYGONOUS
Po*lyg"o*nous, a.
Defn: Polygonal.