twinningPronunciation: /twɪnɪŋ/Translate twinning | into Italian Definition of twinning noun [mass noun] the bearing of twins:the study showed an increased level of twinning in cattle the occurrence or formation of twinned crystals: gypsum crystals often have swallowtail twinningtwinning in other Oxford dictionaries Definition of twinning in the US English dictionary
