/ Dictionary / Index S subsecretariat: Meaning and Definition of Find definitions for: sub•sec•re•tar•i•at Pronunciation: (sub-sek"ri-târ'ē-it, sub"sek-), [key] — n. an administrative department that assists and is subordinate to a secretariat. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. subsea subsection 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