control rod control panel • control room · · · Info · Definitions · Characters · · control rod · · Text Common · · Latin · · Scripts 11 · · Length 3 · · Syllables Definitions · · · (noun) a steel or aluminum rod that can be moved up or down to control the rate of the nuclear reaction. Synonyms: control rod. · · Noun Definition 1 Characters · · space U+0020 c latin small letter c U+0063 d latin small letter d U+0064 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074