The name TM comes from Bhâvâtît Dhyân

Maharishi interviewed by Ed Newman, 1973

Question: Maharishi, you yourself, I believe, studied Physics…
MAHARISHI: “That was my school there.” (laughs)
Q: Yes, you went to Allahabad university, if I am pronouncing it correctly…
MAHARISHI: “Yes, it’s very good…” [both laughing] “Allahabad university.”

Q.: What lead you into this? What were the steps by which you became a Yogi?
MAHARISHI: “I think, just the mind of a scientist. To investigate more systematically the ultimate reality. What is deep within the mind. What is the ultimate reality, and if it can be experienced. Just this thing.
A ‘Yogi’ is someone who has this inner awareness awakened in his consciousness. It’s a simple word.
Just this mind of a scientist… that if there is some deeper reality, I must experience it. If there is that full potential of life, I must have it. It’s a very natural desire that rises in everyone.
And fortunately I got a Master who could just indicate to me an effortless natural way to it. And when I found it’s beautiful, so wonderful, I thought I would like to share it with everyone in the world.”

Q.: Your Master, what did he call it? Did he have a particular name for what you call Transcendental Meditation?
MAHARISHI: “In Sanskrit, in the Gita, we get this word „Bhâvâtît“. Bhâvâtît… beyond the thought, transcendental… just that. Bhâvâtît Dhyân… “Dhyân” is meditation, “bhâvâtît” is transcendental. This is common. But what was rare was the practice, the technique whereby one uses only the nature of the mind. And using the nature of the mind, the mental activity subsides and settles down to that inner calmness.