| aplanatic f. |
that focus or point from which diverging rays pass the lens without spherical aberration.
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| aplanatic l. |
one that serves to correct spherical aberration and coma.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| aplastic a. |
any of a diverse group of anemias characterized by bone marrow failure with reduction of hematopoietic cells and their replacement by fat, resulting in pancytopenia, often accompanied by granulocytopenia and thrombocytopenia. It may be hereditary; it may be secondary to causes such as toxic, radiant, or immunologic injury to bone marrow stem cells or their microenvironment; it may be associated with various diseases; or it may be idiopathic.
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| aplastic c. |
the most common type of sickle cell crisis, a transient condition marked by sudden disappearance of erythroblasts from the bone marrow; it develops under various circumstances, including certain hemolytic states and infections.
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| aplastic l. |
lymph that contains an excess of leukocytes and does not tend to become organized; called also corpuscular l.
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