bonorum.. In the civil law. The possession of goods. More commonly termed “bonorum possessio,” : —Possessio civilis. In Roman law. A legal possession, c. c., a possessing accompanied the intention to be or to thereby become owner; and, as so understood, it was distinguished from “nossessio naturalis,” otherwise called “nuda detentio,” which was a possessing without any such intention. Possessto civilie was the basis of usucapio or of longi temporis possessio, and was usually (but not necessarily) adverse session. rown.—-Possessio fratris. he possession or seisin of a brother; that is, such possession of an estate by a brother as would entitle his sister of the whole blood to succeed him as heir, to the exclusion of a half-brother. Hence, derivatively, that doctrine of the older English law of descent which shut out the halfblood from the succession to estates; a doctrine which was abolished by the descent act, 3 & 4