ir·re·place·a·ble 
(ĭr′ĭ-plāsə-bəl)
(ĭr′ĭ-plāsə-bəl)adj.
Impossible to replace: irreplaceable antiques.
ir′re·place′a·bili·ty, ir′re·placea·ble·ness n.
ir′re·placea·bly adv.
- Alta.
- Alta.
- Alta California
- Altaic
- Altai Mountains
- radiological
- radiologically
- radiologist
- radiology
- radiolucency
- radiolucent
- radiolysis
- radiolytic
- radioman
- radiometer
- radiometric
- radiometric dating
- radiometry
- radiomimetic
- radionuclide
- radiopacity
- radiopaque
- radiopharmaceutical
- radiophone
- radiophonic