Freebase (0.00 / 0 votes) Rate this definition: Essential amino acid. An essential amino acid or indispensable amino acid is an amino acid that cannot be synthesized de novo by the organism, and therefore must be supplied in the diet.
An island nation, Seychelles is located in the Indian Ocean, northeast of Madagascar and about 1,600 km (994 mi) east of Kenya. The archipelago consists of more than 116 islands. The granitic islands are considered the oldest and hardest granite in the world.
Zanzibar is an island in the western Indian Ocean, about 22 miles (35 kilometers) off the east coast of Africa. It forms part of the country of Tanzania and is called Unguja by its Swahili-speaking inhabitants. The principal city is also called Zanzibar.