Invertebrate (adjective)

Having no backbone or spinal column.

Origin:

The word 'invertebrate' originated from the latin words 'in-' meaning 'not' and 'vertebratus' meaning 'having a backbone'.

Examples:

1. Invertebrate animals include insects, spiders, and jellyfish.
2. The invertebrate fossils found in the rocks were a new discovery.
3. Invertebrates make up the majority of all known animal species.
4. The study of invertebrates is a major part of zoology.
5. Invertebrates have a unique anatomy and physiology compared to vertebrates.