Past tense of experimentize (or variant of experimentized); subjected to experimentation or testing.
This appears to be a misspelling or non-standard variant of 'experimentized.' If 'experiment' + '-ize' + '-d' (past tense), it would follow standard verb conjugation. The spelling 'experment-' (missing the 'i') suggests this is an error or very rare variant form.
This word highlights how English spelling can be tricky—the difference between 'experimentized' and 'expermentized' is whether someone carefully spelled it out or let their fingers slip on the keyboard!
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