
• (n.) Any one of the authors of the three synoptic Gospels, which give a history of our Lord`s life and ministry, in distinction from the writer of John`s Gospel, which gives a fuller record of his teachings.
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http://thinkexist.com/dictionary/meaning/synoptist/
Syn·op'tist noun Any one of the authors of the three synoptic Gospels, which give a history of our Lord's life and ministry, in distinction from the writer of John's Gospel, which gives a fuller record of his teachings.
Found on
http://www.encyclo.co.uk/webster/S/267

one of the authors (Matthew, Mark, or Luke) of the synoptic Gospels.
Found on
https://www.infoplease.com/dictionary/synoptist
No exact match found.