Zonary pertains to a zone or a belt, thus some synonyms for this word would be circumferential, encircling, or girdling. Additionally, it can also refer to an organism's distinctive characteristic of having bands or zones, and in this sense, words like striped, banded, or linea could be used interchangeably. Zonary can also describe the characteristic of a seed's structure, with synonyms like encircling or rimming. Other phrases that could replace zonary are perimeter, bordering, or surrounding. In general, terms that indicate a sense of encircling or banding can be used as potential synonyms for this word.