‖ cellulitisMed.|sɛljuːˈlaɪtɪs| [mod.L. f. L. cellula= cellule + -itis.] Inflammation of the cellular or areolar tissue. (Syd. Soc.Lex.) 1861Bumstead Ven. Dis. (1879) 690 Orbital cellulitis.1878T. Bryant Pract.Surg. I. 50 No attempt is made to distinguish between it [erysipelas] and cellulitis.