ónæmisins
ónæmisins is an Icelandic term that translates to "of the immune system" or "immune system's" in English. It refers to the possessive form of "ónæmi," which means "immunity" or "immune system." Therefore, "ónæmisins" is used to describe something belonging to or related to the immune system.
For example, in a biological context, one might discuss "ónæmisins viðbrögð" (the immune system's response) or