Potnia Theron is a term first used (once) by Homer

Homer

In the Western classical tradition Homer , is the author of the Iliad and the Odyssey, and is revered as the greatest ancient Greek epic poet. These epics lie at the beginning of the Western canon of literature, and have had an enormous influence on the history of literature.When he lived is...

 (Iliad 21. 470) and often used to describe female divinities associated with animals. The word Potnia

Potnia

Potnia , Ancient Greek for "Mistress, Lady", title of a goddess. The word was inherited by Classical Greek from Mycenean Greek with the same meaning and it was applied to several goddesses. A similar word is the title Despoina, "the mistress", which was given to the nameless chthonian goddess of...

, meaning mistress or lady, was a Mycenaean word inherited by Classical Greek

Ancient Greek

Ancient Greek is the stage of the Greek language in the periods spanning the times c. 9th–6th centuries BC, , c. 5th–4th centuries BC , and the c. 3rd century BC – 6th century AD of ancient Greece and the ancient world; being predated in the 2nd millennium BC by Mycenaean Greek...

, with the same meaning, which has an exact parallel in Sanskrit

Sanskrit

Sanskrit , is a historical Indo-Aryan language and the primary liturgical language of Hinduism, Jainism and Buddhism.Buddhism: besides Pali, see Buddhist Hybrid Sanskrit Today, it is listed as one of the 22 scheduled languages of India and is an official language of the state of Uttarakhand...

 .

Homer's mention of potnia theron is thought to refer to Artemis

Artemis

Artemis was one of the most widely venerated of the Ancient Greek deities. Her Roman equivalent is Diana. Some scholars believe that the name and indeed the goddess herself was originally pre-Greek. Homer refers to her as Artemis Agrotera, Potnia Theron: "Artemis of the wildland, Mistress of Animals"...

 and Walter Burkert

Walter Burkert

Walter Burkert is a German scholar of Greek mythology and cult.An emeritus professor of classics at the University of Zurich, Switzerland, he also has taught in the United Kingdom and the United States...

describes this mention as "a well established formula". An Artemis type deity, a 'Mistress of the Animals', is often assumed to have existed in prehistorical religion and often referred to as Potnia Theron, with some scholars positing a relationship between Artemis and goddesses depicted in Minoan art and "Potnia Theron has become a generic term for any female associated with animals."