Epoch comes from Medieval Latin epocha, from Ancient Greek epokhḗ ('a stop, fixed point in time'), from epékhein ('to hold back, pause'), from epi- ('upon') + ékhein ('to hold'). Morphologically, the form is compositional: epi- marks part of the visible structure, while the remaining element supplies the lexical base. In present use, it is used as a noun meaning "a notable period in history marked by distinctive events or characteristics", so the historical material remains connected with the current sense rather than standing as bare ancestry. The wider English family includes derivatives such as epochal and related forms such as epochal, showing how the same historical material continues to organize neighboring vocabulary. The named historical forms include Latin epocha, Ancient Greek ἐποχή, and Ancient Greek ἔχειν, keeping the history tied to concrete forms rather than a loose resemblance.