What does temary fom mean?

"Temary fom" appears to be a typographical error or a misunderstanding of a term. If you meant "ternary form," it refers to a musical structure consisting of three sections: A-B-A. The first section (A) presents a theme, the second section (B) contrasts it, and the final section (A) repeats the initial theme, creating a sense of symmetry and balance in the composition.