- (n.) The whole amount of shipping estimated by tons; as, the tonnage of the United States. See Ton.
- (n.) The cubical content or burden of a vessel or vessels, in tons; or, the amount of weight which one or several vessels may carry. See Ton, n. (b).
- (n.) The weight of goods carried in a boat or a ship.
- (n.) A duty or impost on vessels, estimated per ton, or, a duty, toll or rate payable on goods per ton transported on canals.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). tonnage. Retrieved September 25, 2026, from http://smartdefine.org/tonnage/definitions/2073208 |
| Chicago | Webster's. 2011. "tonnage" http://smartdefine.org/tonnage/definitions/2073208 (accessed September 25, 2026). |
| Harvard | Webster's 2011, tonnage, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/tonnage/definitions/2073208>. |
| MLA | Webster's. "tonnage" 28 May 2011. Web. 25 September 2026. <http://smartdefine.org/tonnage/definitions/2073208> |