plene
A word written with matres lectionis (letters indicating vowels).
Thus, in the Pentateuch and in the earlier prophets the plenes are counted, whilst in the later prophets the defectives are enumerated.
Where it comes from
From Latin plēnus (“full”) (adjective) or plēnē (“fully”) (adverb).
Adapted from the Wiktionary entry plene (CC BY-SA 4.0).