rod-shaped adjective2 •Shaped like a rod; long and cylindrical.Walk-through detectors designed to spot guns, knives and other flat and rod-shaped weapons cost almost £5,000 each. — 2008 •Describing a form of bacterium shaped like a rod; bacilliform.S. pombe is a rod shaped organism, and during its cell cycle it grows mostly in length with little change in diameter. — 1981 formsmore rod-shaped · most rod-shaped