[mono.nu.cle.o.sis] n [NL, fr. ISV mononuclear + NL -osis] (1920): an abnormal increase of mononuclear white blood cells in the blood; specif: infectious mononucleosis
MONONUCLEOSIS
Meaning of MONONUCLEOSIS in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012