Breadcrumb Home > Dictionary > Index K Klinefelter's syndrome: Meaning and Definition of Find definitions for: Kline'fel•ter's syn"drome Pronunciation: (klīn'fel-turz), [key] — Pathol. Pathol. an abnormal condition in which at least one extra X chromosome is present in a male: characterized by reduced or absent sperm production, small testicles, and in some cases enlarged breasts. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. K-line Kline test 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: invidious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language