'cellularly' is formed from the adjective 'cellular' plus the adverbial suffix '-ly'. 'Cellular' ultimately derives from Latin 'cellula' meaning 'small room' or 'small chamber'.

'cellular' comes from Latin 'cellula' (a diminutive of 'cella'), passed into Medieval Latin and then into Middle French/English as 'cellule'/'cellular'. The adverbial form was formed by adding the English suffix '-ly' to 'cellular'.

Originally related to a 'small room' or 'chamber' (Latin) and later applied to biological 'cells'; over time the term expanded to include both biological cell contexts and technological uses (e.g., cellular networks).