IPA: /sɛl.jʊˈlɛr.ɪ.ti/
KK: /sɛlˈjʊlɛrɪti/
The amount and types of cells present in a specific tissue or area.
The cellularity of the tumor was assessed to determine its aggressiveness.
Cellularity → It is formed from "cell" (from Latin *cella*, meaning a small room or chamber) and "-arity" (from Latin *-itas*, meaning a state or condition). The word "cellularity" refers to the state or condition of being composed of cells.
Think of a small room or chamber ('cell') and how it relates to the state of being made up of many such rooms or units, which is what 'cellularity' means.