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portolano

American  
[pawr-tl-ah-noh, pohr-] / ˌpɔr tlˈɑ noʊ, ˌpoʊr- /

noun

portolanos, plural portolani plural
  1. 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.


Other Word Forms

Noun Inflected Forms

Etymology

Origin of portolano

1855–60; < Italian: shipmaster's guidebook; earlier, harbor master < Medieval Latin portulānus. See port 1, -ule, -an

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

"A comparison of the contours of the Mediterranean, according to various portolanos, with a modern chart, shows that the normal portolano contained no mistake due to the misdirection of the compass."

From The Chronicle of the Discovery and Conquest of Guinea Vol. II by Zurara, Gomes Eannes de

The makers of the better class of portolani evidently had the use of the compass in drawing their charts.

From American Nation: a history — Volume 1: European Background of American History, 1300-1600 by Cheyney, Edward Potts

Just at the beginning of the fourteenth century, however, a new line was struck out in map-making by the construction and steady development of sailing charts, or "portolani."

From American Nation: a history — Volume 1: European Background of American History, 1300-1600 by Cheyney, Edward Potts

Nor do the earliest portolani contain any compass-roses or wind-roses.

From The Chronicle of the Discovery and Conquest of Guinea Vol. II by Zurara, Gomes Eannes de

Strictly scientific map-making begins with the Mediterranean portolani.

From The Chronicle of the Discovery and Conquest of Guinea Vol. II by Zurara, Gomes Eannes de

Many names here occurring are, however, not to be found on the portolanos of the fourteenth century....

From The Chronicle of the Discovery and Conquest of Guinea Vol. II by Zurara, Gomes Eannes de

"A comparison of the contours of the Mediterranean, according to various portolanos, with a modern chart, shows that the normal portolano contained no mistake due to the misdirection of the compass."

From The Chronicle of the Discovery and Conquest of Guinea Vol. II by Zurara, Gomes Eannes de

In itself, the Dieppese story is not impossible, and we shall see in another section, from the witness of the Map of 1351 and other portolanos, how plausible it appears, together with still greater ventures.

From The Chronicle of the Discovery and Conquest of Guinea Vol. II by Zurara, Gomes Eannes de

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