Abstract: The diagnosis of childhood cancer has a profound impact on the family. How nurses understand family affects their practice with families facing the diagnosis of childhood cancerShaped by Heideggerian phenomenology, van Manens methodology for hermeneutic phenomenology was used to construct an understanding of family from the experiences of family members facing the diagnosis of childhood cancer. Seven family members from two families, one mother, two fathers, two siblings, and two grandparents were interviewed about their experience of facing the diagnosis of childhood cancer.From the participants experience the meaning of family was interpreted as being-with-others, for-the-sake-of-others, who one might not distinguish from oneself. This understanding of family is recognisable, yet different from traditional definitions of family and may help nurses and family members to act more thoughtfully and tactfully with each other