Pyramidic; Pyramidical

Part of speech: adjective (a.)

Of or pertaining to a pyramid; having the form of a pyramid; pyramidal. " A pyramidical rock." Goldsmith. "Gold in pyramidic plenty piled." Shenstone. -- Pyr`a*mid"ic*al*ly, adv. Pyr`a*mild"ic*al*ness, n.