What are the best answers for “the act of dividing into two sharply different categories”?

dichotomisation, dichotomization.

How many letters does the top answer for “the act of dividing into two sharply different categories” have?

The most common answer is dichotomisation (15 letters).

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

dichotomisation 15 letters wn-def

the act of dividing into two sharply different categories

dichotomization 15 letters wn-def

the act of dividing into two sharply different categories