cat·e·chise I. noun orcat·e·chis\ˈkäd.əˌjiz, -ˌchis\ (pluralcatechis·es \-ˌjizə̇z, -ˌchisə̇z\) Etymology:catechise, modification of French catéchèse, from Middle French, from Late Latin catechesis; catechis, probably short for catechism now dialect: catechism II. \ˈkad.əˌkīz, -atə-\ variant of catechize