A thunderstorm consisting of two or more cells, of which most or all are often visible at a given time as distinct domes or towers in various stages of development. Nearly all thunderstorms (including supercells) are multi-cellular, but the term often is used to describe a storm which does not fit the definition of a supercell.
MULTI-CELL(ULAR) THUNDERSTORM
Meaning of MULTI-CELL(ULAR) THUNDERSTORM in English
Weather and meteorology English vocabulary. Английский словарь погоды и метеорологии . 2012