Skip to main content

Vecinho, Joseph


VECINHO, JOSEPH (end of 15th century), scientist and physician to King John ii of Portugal (1481–95). A pupil of Abraham *Zacuto, he translated his teacher's tables into Spanish, and his translation, Almanach Perpetuum, published in Leiria in 1496 by Samuel d'Ortas, a Jew, became the basis for the Hebrew version of Zacuto's work. Along with the voyager and cosmographer Martin Behaim and the then court physician Rodrigo, he participated in a commission on navigation, concerned especially with improving the techniques for establishing direction and location at sea. Through his improvements in the nautical astrolabe, Vecinho gave a boost to Portuguese maritime activity. Vecinho sat on the commission when it rejected Columbus' request for a westward journey to the Indies on the grounds that it was a chimera. However Vecinho gave Columbus a copy of his translation of Zacuto's tables, which the discoverer found useful and carried with him.


M. Kayserling, Geschichte der Juden in Portugal (1867), 86, 123; idem, Christopher Columbus and the Participation of the Jews in the Spanish and Portuguese Discoveries (1907), index; C. Roth, in: jqr, 27 (1936), 233–6; C. Singer, in: Legacy of Israel (1927), 242–3.

[Martin A. Cohen]

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"Vecinho, Joseph." Encyclopaedia Judaica. . 20 Aug. 2019 <>.

"Vecinho, Joseph." Encyclopaedia Judaica. . (August 20, 2019).

"Vecinho, Joseph." Encyclopaedia Judaica. . Retrieved August 20, 2019 from

Learn more about citation styles

Citation styles gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, cannot guarantee each citation it generates. Therefore, it’s best to use citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

The Chicago Manual of Style

American Psychological Association

  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.