V. S. Apte, The Practical Sanskrit–English Dictionary. Look up any word of the Gita in Devanagari, IAST or Harvard-Kyoto, or browse the headwords letter by letter.
Entry तुरीय
तुरीयturīyaa.The fourth.
The fourth.
Consisting of four parts.
Mighty.
Derived forms and compounds
-यम्
A quarter, a fourth part, fourth.
(In Vedānta. Philosophy) The fourth state of the soul in which it becomes one with Brahman or the Supreme Spirit.
-वर्णः, -जातिः a man of the fourth caste, a Śūdra; तुरीयजातिं तिलकयन् कुलोत्तुङ्ग इति यथार्थनामा बभूव शूद्रः । चोलचम्पू p.6.