There are multiple origins and meanings for the name:
1. Comes from the Latin word (camella) meaning - "goblet; bowl"
2. Feminine form of the given name Camel
3. Form of the given name Camilla meaning - "perfect; complete; young girl of impeccable origin; camomile".
4. English name. The genus was named by Linnaeus after the Jesuit botanist Georg Joseph Kamel from Brno, who worked in the Filipino, though he never described a camellia.
5. Comes from the English word "camomile"