Simple past tense and past participle of grid. (verb)
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Use "gridded" in a sentence
"For example, Interior 5 (Wall) from 2009 feels like a kind of gridded abstract composition, with the vertical orange stripe of spray painting hovering like an artistic gesture among industrial materials."
"Their gridded straps hold a variety of items from pencils, to cell phones, to business cards."
"Image of a nicely gridded-up square foot garden courtesy shygantic, via a Creative Commons license."