air seedern. an agricultural machine towed by a tractor, which uses compressed air to propel seeds in order to sow a large area.
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1982 Globe & Mail 14 June b8/6 An air seeder, with air being used as a medium to distribute seeds, which is said to be more transportable than conventional seeders.
2001 Soybean Digest Apr. 34/1 We use an air seeder for soybeans, peas and wheat.