Psomion is the item dipped and given to Judas, then received before he goes out.

The attested use denotes a specific item handled in the sequence of dipping, giving, and receiving: it is given to Judas in John 13:26, followed by events after it in John 13:27 and after his receiving it in John 13:30.

1. Item dipped, given, and received · dominant

   All three occurrences are accusative singular neuter nouns within the same sequence. In John 13:26 the APB renders Jesus dipping the item and giving it to Judas; John 13:27 and John 13:30 continue the scene after the item and after its reception.

   John 13:26John 13:27John 13:30

In the Anselm Project Bible: The APB presents the item as “the piece” in each verse, describing it as dipped and given in John 13:26 and received in John 13:30. This wording confirms the scene without establishing a finer lexical distinction.