Simple past tense and past participle of landfill.(verb)
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Use "landfilled" in a sentence
"At his workshop in South Kensington, an area he picked for its "classic car and bike heritage", he is showcasing the big three: the Zero Motorcycle, with a revolutionary lithium ion battery so clean it could be landfilled and a super-light frame made of aircraft aluminium? it has a range of 50 miles and costs less than a penny a mile to run; the Sprint?"
"In any case, some incinerator operators merge the two before they get landfilled."
"The company says its sleeves keep about eight 16oz PET bottles from being landfilled."