/ Dictionary / Index U undersecretariat: Meaning and Definition of Find definitions for: un•der•sec•re•tar•i•at Pronunciation: (un"dur-sek"ri-târ'ē-it, un'dur-sek"ri-ter"-), [key] — n. a department or section of a ministry of which an under secretary is in charge. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. underseas under secretary Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language