Yes, turmeric is a stem. More specifically, it is an underground stem known as a rhizome. This rhizome is the part of the turmeric plant that is used as a spice and in traditional medicine. It is divided into two parts: the mother rhizome, which is pear-shaped, and the fingers, which have branches on either side.
Turmeric's rhizome contains curcumin, a chemical that is believed to have anti-inflammatory and antioxidant properties. It is commonly used in Ayurvedic medicine and other traditional practices for its potential health benefits.