cruciferPronunciation: /ˈkruːsɪfə/Definition of crucifer noun 1 Botany a cruciferous plant, with four petals arranged in a cross. 2a person carrying a cross or crucifix in a procession. Origin: mid 16th century: from Christian Latin, from Latin crux, cruc- 'cross'crucifer in other Oxford dictionaries Definition of crucifer in the US English dictionary