engager

plural engagers

1. One who, or that which, engages.

   engagers in conflicts

   1. biochemistryA particle or compound which engages certain cells in a process.

      To address this limitation, strategies for redirecting T cells to treat cancer are being intensively investigated, while the bispecific T cell engager (BiTE) therapy constitutes one of the most promising therapeutic approaches.

      2021 May 26, Shujie Zhou, Mingguo Liu, Fei Ren, Xiangjiao Meng, Jinming Yu, “The landscape of bispecific T cell engager in cancer treatment”, in Biomarker Research, volume 9, →DOI, article 38, page 1

2. One who enters into an engagement or agreement; a surety.

   Several sufficient citizens were engagers.

   1834, George Godfrey Cunningham, Lives of Eminent and Illustrious Englishmen