subdichotomize
/ˌsʌbdʌɪˈkɒtəmʌɪz/ /ˌsʌbdɪˈkɒtəmʌɪz/Now rare
verb
[with object] To dichotomize (something) further; to divide into further or subordinate parts, groups, or categories. Also occasionally: to divide (an undivided whole); to dichotomize.
Origin
Early 17th century; earliest use found in Henoch Clapham (fl. 1585–1614), writer on theology and preacher. From sub- + dichotomize.