*A term to refer to a militious group (such as a terrorist group).
*A quick term for a cellphone, as displayed, as an example, in the first episode of the current TMNT series; the "shellcell".
*The name of a powerful villian in Dragonball Z, able to create duplicates of his genetic code, all of which are capable of learning, and thus creating an almost immortal, self-aware foe. The only way to stop him is to fry his ENTIRE body.
Cell cannot reach his full potential until he absorbs Android 17 and Android 18. Once he does, they are permanently integrated into his design, giving him great power. Once he absorbs them, even if he loses android 17 or 18's body, he is still able to retain his perfect power (prior to exploding) after blowing himself up, leaving one cell he can regenerate from, and giving him a zenkai increase, making his power substantially greater, enough to kill Future Trunks with one blow, and power that rivals that of Super Saiyan 2 Gohan.
Cell is arguably the villain with the most potential. After he blows himself up out of fear, just after throwing up android 18, making him revert to his semi-perfect form, he has one cell left and regenerates from that cell, making him even more powerful than before because of his saiyan dna. This form is referred to by fans as "Super Perfect Cell". Putting his strength on par with (but not as strong as) super saiyan 2 Gohan. Theoretically he could just keep blowing himself to smithereens over and over again until he is the strongest fighter in the universe, making him no match for even Gohan. But he instead never blows himself up again and opts to return to Earth to face Gohan again with his new power.