Subinvolution is a medical condition in which after childbirth, the uterus does not return to its normal size. ==Definition== When the involution is impaired or retarded it is called subinvolution. The uterus is the most common organ affected by subinvolution. As it is the most accessible organ to be measured per abdomen, the uterine involution is...
• (n.) Partial or incomplete involution; as, subinvolution of the uterus.
Arrest of the normal involution of the uterus following childbirth with the organ remaining abnormally large. ... (05 Mar 2000) ... 
(sub″in-vo-loo´shәn) incomplete involution; failure of a part to return to its normal size and condition after enlargement from functional activity.
Sub·in`vo·lu'tion noun Partial or incomplete involution; as, subinvolution of the uterus. 
Type: Term Pronunciation: sŭb′in-vō-lū′shŭn Definitions: 1. Arrest of the normal involution of the uterus following childbirth with the organ remaining abnormally large.
Partial involution (return to normal size) of an organ, as of the uterus following delivery of the fetus.