Thessalonian

adjective
Thes·sa·lo·nian | \¦thesə¦lōnyən, -ōnēən\

Definition of Thessalonian 

(Entry 1 of 2)

: of or relating to ancient Thessalonica, Macedonia

Thessalonian

noun
\"\
plural -s

Definition of Thessalonian (Entry 2 of 2)

1 : a native or resident of Thessaloníki, Greece

2 Thessalonians plural in form but singular in construction : either of two letters written by Paul to the Christians of Thessalonica and included as books in the New Testament abbreviation Th, Thes, Thess — see Bible Table

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History and Etymology for Thessalonian

Adjective

irregular from Thessalonica, seaport city of west central Macedonia (now Salonika) + English -an

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