Sri Aurobindo's Gayatri Mantra

ॐ तत् सवितुर् वरं ऱुपं ज्योति परस्य धीमहि ।

यन्नः सत्येन दीपयेत् ॥

Om Tat Savitur Varam Rupam Jyoti Parasya Dhimahi

Yannah Satyena Dipayet.

Sri Aurobindo's translation of Gayatri Mantra

CWSA, Vol.35, p.831, in The Mother's handwriting

Let us meditate on the most auspicious (best) form of Savitri,
on the Light of the Supreme which shall illumine us with the Truth.

Comparison with original Gayatri Mantra

M.P. Pandit, 'Sri Aurobindo and his Yoga', p.107

"The original Gayatri Mantra was intended for illumining the intellect, while Sri Aurobindo's modification of the Gayatri Mantra is intended for supramentalization of the entire being."

Meaning of Sri Aurobindo's Gayatri Mantra

Om = Om
Tat = That
Savitur = Sun-god who is the Creator
Varam = most auspicious
Rupam = form
Jyotih = Light
Parasya = of the Supreme, since para  =  Transcendental
Dhimahi = meditate on (since Dhi = Intellect)
Yannah = by which
Satyena = Truth
Dipayet = shall illumine (dipa = light)