brightline

or bright-line

[ brahyt-lahyn ]
/ ˈbraɪtˌlaɪn /

adjective

(of rules, standards, etc.) unambiguously clear: This muddies the waters of what should be a brightline rule.

noun

Physical Chemistry. brightline spectrum.

Origin of brightline

bright + line1

Words nearby brightline

bright-eyed and bushy-tailed, bright-field, brighten, brightener, brightening agent, brightline, brightline spectrum, brightness, brighton, brighton and hove, brights