There isn't a single perfect synonym for "jellylike cells" as it's a descriptive term rather than a specific biological classification. However, depending on the context, you could use words like:

General descriptions:

* Gelatinous cells: This emphasizes the consistency of the cells.

* Mucoid cells: This implies the presence of mucus, a common component of jellylike substances.

* Amorphous cells: This describes cells without a definite shape.

Specific types of cells:

* Mesoglea: This is the jellylike layer found in cnidarians (like jellyfish).

* Slime mold: These organisms can form a jellylike mass.

* Coelenterates: These organisms have a gelatinous body.

Other options:

* Viscous cells: Emphasizes the stickiness of the cells.

* Gooey cells: A more informal and descriptive term.

The best word to use will depend on the specific context and the characteristics of the cells you are referring to.