Breadcrumb Home > Dictionary > Index K km: Meaning and Definition of Find definitions for: km Pronunciation: [key] kilometer; kilometers. km. Pronunciation: [key] kilometer; kilometers. kingdom. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: km (Thesaurus) Klystron kMc TrendingHere are the facts and trivia that people are buzzing about. Who's Who in the "Lord of the Rings" Roman Catholic Church Hierarchy Current Events This Week: March 2023 42 Top Western Movie Quotes Slaves in the Family User's Guide to Environmental Language ✖ Related Content Daily Word Quiz: tangential Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language