lymphocyte

lym·pho·cyte

noun \ˈlim(p)-fə-ˌsīt\

Definition of LYMPHOCYTE

: any of the colorless weakly motile cells that originate from stem cells and differentiate in lymphoid tissue (as of the thymus or bone marrow), that are the typical cellular elements of lymph, that include the cellular mediators of immunity, and that constitute 20 to 30 percent of the white blood cells of normal human blood—see b cell, t cell

—lym·pho·cyt·ic \ˌlim(p)-fə-ˈsit-ik\ adjective