A type of white blood cell (leukocyte) that lacks intracellular granules when observed under the microscope; includes lymphocytes and monocytes. Note the term agranulocytosis, however, refers to the absence of granulocytes (“a” = without + granulocytosis).
A nongranular white blood cell (e.g., lymphocyte or a monocyte).
A variety of white blood cell that lacks granules.