/ Dictionary / Index M minimum-security: Meaning and Definition of Find definitions for: min•i•mum-se•cu•ri•ty Pronunciation: (min'u-mum-si-kyoor'i-tē), [key] — adj. (of a prison) designed for prisoners regarded as being less dangerous; having fewer restrictions. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. minimum lending rate minimum thermometer Related Content Daily Word Quiz: foliage Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language