Simple past tense and past participle of span.(verb)
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Use "spanned" in a sentence
"It spanned from the forecastle-head to the forecastle-house, next to the 'midship house, and then to the poop."
"That portion which spanned from the mizzen-mast to the 'midship-house was missing, while the starboard boat on the' midship-house was a splintered mess."
"Her life spanned from the Wright Brothers flight at Kitty Hawk, through both wars to end all war, the depression, the civil rights movement and disco."