[ULPIANUS libro uicensimo quinto ad edictum. ] §50.16.38.pr'Ostentum' Labeo definit omne contra naturam cuiusque rei genitum factumque.
[ULPIANUS, in the twenty-fifth book on the Edict.] Labeo defines 'portent' as everything born and made against the nature of each thing.
duo genera autem sunt ostentorum: unum, quotiens quid contra naturam nascitur, tribus manibus forte aut pedibus aut qua alia parte corporis, quae naturae contraria est: alterum, cum quid prodigiosum uidetur, quae Graeci φάντασματα uocant.
But there are two kinds of portents: one, whenever something is born against nature, for instance with three hands or feet, or with some other part of the body which is contrary to nature; the other, when some prodigy is seen, which the Greeks call phantasms.