asplenia

noun

asple·​nia (ˌ)ā-ˈsplē-nē-ə 

: absence of the spleen or of normal spleen function or activity

Patients with actual or functional asplenia are at risk for bacteremia due to encapsulated organisms such as Streptococcus pneumoniae …

—Brook Watts et al., The New England Journal of Medicine

asplenic

(ˌ)ā-ˈsple-nik 

adjective