PYRAMIDAL a.
l. Pyramidal numbers (Math.), certain series of figurate numbers expressing the number of balls or points that may be arranged in the form of pyramids. Thus 1, 4, 10, 20, 35, etc., are trangular pyramidal numbers; and 1, 5, 14, 30, 55, etc., are square pyramidal numbers.
QUARTER n.
a vessel's quarter. -- Quarter aspect. (Astrol.) Same as Quadrate. -- Quarter back (Football), the player who has position next behind center rush, and receives the ball on the snap back. -- Quarter badge (Naut.), an ornament on the side of a vessel near, the stern. Mar. Dict. -- Quarter bill (Naut.), a list specif…
RAKE v.
ength of; in naval engagements, to cannonade, as a ship, on the stern or head so that the balls range the whole length of the deck. To rake up. (a) To collect together, as the fire (live coals), and cover with ashes. (b) To bring up; to search out an bring to notice again; as, to rake up old scandals.…
RICOCHET n. 2 definitions
A rebound or skipping, as of a ball along the ground when a gun is fired at a low angle of elevation, or of a fiat stone thrown along the surface of water. Ricochet firing (Mil.), the firing of guns or howitzers, usually with small charges, at an elevation of only a few degrees, so as to cause the balls or shells to bo…