Definition of compost noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈkɒmpɒst//
; NAmE NAmE//ˈkɑːmpoʊst//
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[uncountable, countable] a mixture of decayed plants, food, etc. that can be added to soil to help plants grow potting compost (= a mixture of soil and compost that you can buy to grow new plants in) See related entries: Gardening Word Originlate Middle English: from Old French composte, from Latin composita, compositum ‘something put together’, feminine and neuter past participle of componere.Extra examples Repot the plant in fresh compost. Sow the seeds in trays of potting compost. You can make your own compost in a compost bin.
See the Oxford Advanced American Dictionary entry: compost