noun Etymology: New Latin, from Latin, neuter of plenus Date: 1678 1. a space or all space every part of which is full of matter, an air-filled space in a structure, a general assembly of all members especially of a legislative body, the quality or state of being full
PLENUM
Meaning of PLENUM in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012