deu·to·plasm \ˈ ̷ ̷ ̷ ̷+\noun (-s) Etymology: International Scientific Vocabulary deut- + -plasm; originally formed as French deutoplasme : the nutritive inclusions of protoplasm; especially: the yolk reserves of an egg • deu·to·plas·mic\| ̷ ̷ ̷ ̷|plazmik\adjective