/ˈselyələr/
Adjective
1. Of, relating to, consisting of, or resembling a cell or cells. (wiktionary.org)
2. Derived from, or consisting of cell(s). (biology-online.org)
3. Having numerous compartments or cells. (biology-online.org)
Word origin: NL cellulāris, equiv. to cellul(a) live cell (L: little room).