pla·ti·na 
(plə-tēnə)
(plə-tēnə)n.
Platinum, especially as found naturally in impure form.
[Spanish, diminutive of plata, silver, plate, from Vulgar Latin *plattus; see PLATE.]
- retrogradation
- retrograde
- retrograde ejaculation
- retrogradely
- retrogress
- retrogression
- retrogressive
- retrogressively
- retrolental
- retronym
- retroocular
- retroperitoneal
- retropharyngeal
- retrorocket
- retrorse
- retrorsely
- retrospect
- retrospection
- retrospective
- retrospectively
- retrotransposon
- retroussé
- retroversion
- retroviral
- retrovirologist