Breadcrumb Home > Dictionary > Index P portolano: Meaning and Definition of Find definitions for: por•to•la•no Pronunciation: (pôr"tl-ä'nō, pōr"-), [key] — pl. -nos, -ni a descriptive atlas of the Middle Ages, giving sailing directions and providing charts showing rhumb lines and the location of ports and various coastal features. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Port-of-Spain Porto Novo TrendingHere are the facts and trivia that people are buzzing about. Biographies: Notable Jewish Religious Leaders Current Events This Week: September 2023 Hispanic Population and the 2010 U.S. Census Preamble of the United Nations Charter The Jewish Calendar ✖ Related Content Daily Word Quiz: qiviut Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language