Signs; indications. Circumstances that point to the existence of a given fact as probable, but not certain. For example, indicia of partnership are any circumstances which would induce the belief that a given person was in reality, though not technically, a member of a given firm.
The term is much used in CIVIL LAW in a sense nearly or entirely synonymous with CIRCUMSTANTIAL EVIDENCE. It denotes facts that give rise to inferences, rather than the inferences themselves.
Law Library - American Law and Legal InformationFree Legal Encyclopedia: Hypoxia to Indirect evidence