Dictionary:

acquired

  (ə-kwīrd')

1. Of or relating to a disease, condition, or characteristic that is not congenital but develops after birth.
2. Resulting from exposure to something, such as an antigen or antibiotic.

Applied to a condition contracted after birth and not due to an inherited disease.

1. Of or relating to a disease, condition, or characteristic that is not congenital but develops after birth.
2. Developed in response to an antigen, as resistance to a disease by vaccination or previous infection.

Incurred as a result of factors acting from or originating outside the organism; not inherited.

• a. bleeding — a tendency to bleed caused by factors other than inherited and congenital ones. Includes dicoumarol and warfarin poisonings, nutritional deficiency of vitamin K, liver disease and autoimmune thrombocytopenias.
• feline a. immunodeficiency syndrome — see feline immunodeficiency virus.

The adjective has one meaning:

Meaning #1: gotten through environmental forces