axenic
Free of parasites and similar forms of life; surgically sterile.
(Of experimental animals) Raised under sterile conditions; SYN. germfree.
Used of cultures of microorganisms; not contaminated by or completely free of the presence of other organisms.
axal · axe · axe-breaker · axe-hammer · axe-head · axel · axeman · axenic · axenically · axes · ax handle · axial · axial flow · axiality · axially