Dioˊptricks, or Diopticks

Dioˊptricks, or Dio’pticks [διοπδαικ`η of δἱοπδομαι,Gr.]
the doctrine of refracted vision, or that part of opticks which treats of refracted rays, and their union with one another, according as they are received by glasses, of this or that figure.

Definition taken from The Universal Etymological English Dictionary, edited by Nathan Bailey (1736)

Diameˊrdes * Dippers
Decrepitaˊtion [with Chymists]
Deed Poll, or Polled Deed
Deem
Defeˊct
Delight
Deˊodand
Dewce
Dewx
Diamastigoˊsis
Diameˊrdes
Dioˊptricks, or Dio’pticks
Dippers
Diptere
Discaˊlceated
Disploˊsion
Diversiˊloquent
Dolphin
Doˊlphins [with Gunners]
Dove
Dove
A white Dove