http://www.jewfaq.org/torah.htm provided the following explanation of the word "tradition" as that word was used by God in the essential testimony.

Written Torah:
To Jews, there is no "Old Testament." The books that Christians call the New Testament are not part of Jewish scripture. The so-called Old Testament is known to us
[Jews] as Written Torah or the Tanakh.

Oral Torah:
In addition to the written scriptures, we [Jews] have an "Oral Torah," [which is] a tradition explaining what the above scriptures [Written Torah] mean and how to interpret them and apply the Laws.

Orthodox Jews believe G-d taught the Oral Torah to Moses, and he taught it to others, down to the present day. This tradition was maintained only in oral form until
about the 2d century C.E., when the oral law was compiled and written down in a document called the Mishnah.

Over the next few centuries, additional commentaries elaborating on the Mishnah were written down in Jerusalem and Babylon. These additional commentaries are
known as the Gemara. The Gemara and the Mishnah together are known as the Talmud. This was completed in the 5th century C.E.

An additional note:
The Written Torah is divided into three parts. The parts are TORAH (The Law); NEVI'IM (The Prophets); and KETHUVIM (The Writings). The Written Torah is therefore often referred to as the Tanakh, which is an acrostic of Torah, Nevi'im and Ketuvim.

A link to each occurrence of the word in the essential testimony:
1] tradition 2] tradition