dīdhiti : [f.] light; radiance.

A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]

dīdhiti 1
dī́dhiti f. brightness, splendour, light, a ray Naigh. i, 5 MBh. Kālid. &c
• majesty, power Bhartṛ. ii, 2
• N. of wks., esp. ifc

dī́dhiti f. religious reflection, devotion, inspiration RV. i, 186, 11 &c

Sanskrit-English Dictionary, by M. Monier William