Wiktionary
a. Resembling the shape or sound of a cannon
Usage examples of "cannonlike".
Within the cramped chamber three suited figures stood around a massive cannonlike weapon that gleamed with solenoids and magnetic rings along its barrel: some sort of bizarre and powerful plasma-discharge launcher, Troy guessed, far different from the simple projectile rifles carried by sol-pols.
Just as to each of the skeletal joints of the man there corresponded, in the machine, a magnified, hermetically sealed joint of metal, so for each group of muscles that flexed or straightened a limb there were cannonlike cylinders in which pistons moved, pushed by pumped oil.
The contraption reminded Langdon of some sort of cartoon ray gun-a wide cannonlike barrel with a sighting scope on top and a tangle of electronics dangling below.
Behind him, Lorn can hear the rumbling and whining of a small firewagon as it tows the cannonlike those once used against the Accursed Forestalong the seawall road.
The horses were driven nearly mad with terror by the cannonlike explosions of the thunder and the unearthly blue flashes of the lightning, but with a firm hand and a soothing voice in the ear, Nell urged them forward.