1) Agranulocytosis 2) Agranulosis 
(granulocyte + Gr. penia poverty) agranulocytosis.
A condition in which there is a lower-than-normal number of granulocytes (a type of white blood cell).
<haematology> A reduced number of white blood cells in the circulation. ... (18 Nov 1997) ... 
(gran″u-lo-si″to-pe´ne-ә) a reduction in the number of granular leukocytes in the blood that is less severe than agranulocytosis; called also granulopenia.
an abnormally low number of granulocytes in the circulating blood, which may lead to an increased risk of bacterial infection. In practice, the term is used to refer to neutropenia.
Low granulocyte number in circulating blood.
Type: Term Pronunciation: gran′yū-lō-sī′tō-pē′nē-ă Definitions: 1. Fewer than the normal number of granular leukocytes in the blood. Synonyms: granulopenia, hypogranulocytosis
Granulocytopenia: A marked decrease in the number of granulocytes. Granulocytes are a type of white blood cell filled with microscopic granules that are little sacs containing enzymes that digest microorganisms. Granulocytes are part of the innate, somewhat non specific infection-fighting immune system. They do not respond exclusively to specific a...
granulocytopenia, granulopenia, hypogranulocytosis A condition characterized by an abnormally small number of granulocytes (granular leukocytes) in the blood.