1. Plural of mononuclear; cells or organisms that have a single nucleus.
Usage: biology; medical
2. White blood cells (such as lymphocytes and monocytes) that contain a single nucleus, especially those elevated in infectious mononucleosis.
Usage: medical; hematology

Examples

• The lab technician counted the mononuclears in the blood sample.
• Infectious mononucleosis causes an increase in atypical mononuclears.
• Mononuclears include lymphocytes and monocytes.
• The patient's white blood cell differential showed elevated mononuclears.
• Under the microscope, the mononuclears appeared distinct from other cell types.