hexads

pl. [Gr. hex =six; pl. suff. -ads ( Chem. ).] Chem. Hex atomic elements equivalent to six atoms of hydrogen. hěx-a-gồn, s. hexagonos -six-cornered, from her six, and gonia [Lat. hexagonum, from Greek = an angle, a corner, from gonu =a gone.] knee; Fr. hex a Geom.: A figure having six sides or angles; a regular hexagon is one in which all the sides and angles are equal. "Bees make their cells regular hexagons." - Reid: On the Active Powers , e . iii., ch. ii.