Terminable is from terminate + -able, or directly from Late Latin terminabilis, from Latin terminare ('to limit, end'), from terminus ('boundary, limit'). Important recorded forms include terminare (Latin) and terminus (Latin). Morphologically, the word preserves a built structure whose named elements carry the historical sense into English. The modern sense is largely compositional, with the historical elements narrowing into a stable English lexical item. In current use it covers capable of being brought to an end or having a fixed limit. The wider family includes derived forms such as terminableness and terminability and related words such as terminate, terminal, term, and terminus.