a primitive cell that is a precursor of a lymphocyte
Origin of lymphoblastlympho- + -blast
A large, immature lymphocyte that has been activated by an antigen and divides to give rise to mature lymphocytes (B cells and T cells).
- (US, cytology, oncology) An immature lymphocyte; they proliferate uncontrollably in lymphoblastic leukemia
lympho- +"Ž -blast