·p.pr. & ·vb.n. of Boom.
II. Booming ·adj Advancing or increasing amid noisy excitement; as, booming prices; booming popularity.
III. Booming ·adj Rushing with violence; swelling with a hollow sound; making a hollow sound or note; roaring; resounding.
IV. Booming ·noun The act of producing a hollow or roaring sound; a violent rushing with heavy roar; as, the booming of the sea; a deep, hollow sound; as, the booming of bitterns.