tsi.don is a proper name used chiefly for a place and its inhabitants, and in genealogies for Canaan's firstborn.

The form most often names a geographical place, including its borders, inhabitants, rulers, and people addressed in prophecy; in two genealogical statements it names Canaan's firstborn.

1. Geographical place and its people · dominant

   The proper noun marks a location in boundary and travel descriptions: in Genesis 10:19 the APB renders the Canaanite border as extending “from Sidon,” and in Joshua 11:8 pursuit reaches “Greater Sidon.” It also identifies inhabitants, rulers, and a community addressed in prophetic speech, as in Judges 1:31, Jeremiah 27:3, and Ezekiel 28:21.

   Genesis 10:19Joshua 11:8Judges 1:31Jeremiah 27:3Ezekiel 28:21Ezekiel 28:22
2. Canaan's firstborn in genealogy · rare

   In the genealogical clauses of Genesis 10:15 and 1 Chronicles 1:13, the proper noun occurs as the name of the one whom Canaan begot, rendered by the APB as “Sidon his firstborn.”

   Genesis 10:151 Chronicles 1:13

In the Anselm Project Bible: The APB ordinarily presents the name as “Sidon,” including geographical expressions such as “Greater Sidon” in Joshua 11:8 and relational wording such as Zarephath belonging to Sidon in 1 Kings 17:9. It also uses the same form for Canaan's firstborn in the genealogical verses; the verse is read as a whole.