Sentence:  Immediately after her arrival in Ferrara, while she was still striving to secure the foundation of her exemplary reformed community of Dominican <WSD>tertiaries</WSD>, [Lucia] Brocadelli also renewed her attempts to enhance [Girolamo] Savonarola's saintly reputation. 
Meaning of the word marked with <WSD> tags:  A member of a Roman Catholic third order; a layperson who participates in activities similar to those engaged in by men and women who take religious vows (respectively the first and second orders), and who may wear some elements of an order's habit such as a scapular.