Breadcrumb Home > Dictionary > Index H hair hygrometer: Meaning and Definition of Find definitions for: hair' hygrom"eter Pronunciation: [key] a hygrometer actuated by the changes in length of a strand of human hair brought about by changes in the relative humidity. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hair grass hair implant TrendingHere are the facts and trivia that people are buzzing about. Hard Labor Current Events This Week: June 2023 Languages Spoken in Each Country of the World User's Guide to Environmental Language The Washington Monument: Facts, History & Profile LGBT Pride Month | Biographies of Notable Individuals Civilian Labor Force ✖ Related Content Daily Word Quiz: visceral Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language