aplastic
UK[ˌeɪˈplæstɪk]US[ˌeɪˈplæstɪk]
adj
Relating to or characterized by aplasia, a defective development or congenital absence of an organ or tissue.
adj
In medicine, specifically relating to a failure of the bone marrow to develop or function properly, resulting in a deficiency of blood cells.
Morpheme Breakdown
a
plastic
a
not, without
plastic
formative, growing
Etymology
The term 'aplastic' is a modern medical adjective formed from Greek components. The prefix 'a-' is a direct borrowing from Greek, serving as a strong negative, akin to the Latin 'in-' or English 'un-'. The root 'plastic' derives from the Greek verb plassein, meaning "to mold or shape," which is also the source of words like 'plasma' and 'plastic'. In a biological and medical context, 'plastic' relates to the formative and regenerative capacity of tissues. Therefore, 'aplastic' literally means "without formation or growth," a logical description for conditions where normal cellular development, particularly in bone marrow, is profoundly deficient or absent.
Analysis
Structure: a (not, without) + plastic (formative, growing)
a-: A prefix of Greek origin, meaning "not," "without," or "lacking." It functions as a negative or privative particle.
plastic: From Greek plastikos, meaning "fit for molding, formative," from plassein, "to mold, form." In this word, it functions as the root conveying the sense of formation or growth.
Examples
The patient was diagnosed with aplastic anemia, a serious condition requiring a bone marrow transplant.
Aplastic bone marrow fails to produce sufficient quantities of red blood cells, white blood cells, and platelets.
The congenital disorder resulted in aplastic development of the limb.