Bible Dictionaries
Sos

Webster's Dictionary

The letters signified by the signal ( . . . - - . . . ) prescribed by the International Radiotelegraphic Convention of 1912 for use by ships in distress.

Bibliography Information
Webster, Noah. Entry for 'Sos'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​s/sos.html. 1828.