/ Dictionary / Index L lieutenancy: Meaning and Definition of Find definitions for: lieu•ten•an•cy Pronunciation: (l-ten'un-sē), [key] — pl. -cies. the office, authority, incumbency, or jurisdiction of a lieutenant. lieutenants collectively. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lieutenancy (Thesaurus) Lieut. Comdr. lieutenant Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language