κενό

Etymology: From Ancient Greek κενός (kenos) meaning 'empty, vacant'. The word shares Indo-European roots with English 'recent' through the concept of 'fresh' or 'new' (hence empty of previous content). The philosophical concept of 'void' in Greek thought, particularly in atomistic philosophy, made this word central to scientific and metaphysical discussions. The neuter form κενό became the standard noun for abstract emptiness, distinguishing it from physical containers that happen to be empty.