brightline
or bright-line
[ brahyt-lahyn ]
/ ˈbraɪtˌlaɪn /
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adjective
(of rules, standards, etc.) unambiguously clear: This muddies the waters of what should be a brightline rule.
noun
Physical Chemistry. brightline spectrum.
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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.
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Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021