1. Plural of proteid; compounds containing protein or having protein-like properties, especially in biochemistry and older scientific literature.
Usage: archaic or technical; largely replaced by the term 'proteins' in modern usage; found in older chemistry and biology texts

Examples

• Early biochemists classified proteides as essential organic compounds.
• The proteides in egg white were studied extensively in 19th-century laboratories.
• Modern textbooks use 'proteins' instead of the older term 'proteides'.
• Proteides were thought to be the building blocks of living tissue.
• The distinction between different proteides was a major focus of early nutritional science.