Ossicles
Star fishes, brittle stars and sea urchins are echinoderms. The term echinoderm translates to 'spiny skin'
Exo- is the prefix meaning "outside" and -skeleton is the suffix meaning "structural framework." Together, exo- and -skeleton form the term "exoskeleton," which refers to a hard external skeleton found in many invertebrates.
No, cucumbers are not echinoderms. Echinoderms are a specific group of marine animals that includes starfish, sea urchins, and sea cucumbers. While sea cucumbers are indeed echinoderms, the term "cucumber" generally refers to the common vegetable, which is a member of the gourd family (Cucurbitaceae) and not related to echinoderms.
An inside skeleton is called an "endoskeleton" in contrast to the term "exoskeleton" which is used to describe a "skeleton" that is on the outside.
The exoskeleton would mean outside the skeleton.
The term echodermis is referring to a person's skin. This is the scientific name and definition for this term. It is used often in Science and other professions.
Plates are usually round and used for serving food.
The term describes a group of genetic disease characterized progressive weakness and degeneration of the skeleton is called muscular dystrophy.
The Spanish term "esqueleto" means "skeleton."
Another term for "skull" is "cranium," which refers to the part of the skeleton that encloses the brain.
Fossil
"plates" are the term for the giant sheets of rock on the earths crust