| English | Spanish |
| acute arachnoid cyst | quiste aracnoideo agudo |
| arachnoid canal | conducto aracnoideo de Bichat |
| arachnoid fibroblastoma | sarcoma angiolítico |
| arachnoid fibroblastoma | psamoma meníngeo |
| arachnoid fibroblastoma | fibroblastoma aracnoideo |
| arachnoid fibroblastoma | meningofibroblastoma |
| arachnoid fibroblastoma | meningioma |
| arachnoid fibroblastoma | meningioma endotelioma meníngeo |
| arachnoid granulations | granulaciones aracnoideas |
| arachnoid pulse | pulso aracnoideo (pulsus filiformis) |
| arachnoid pulse | pulso filiforme (pulsus filiformis) |
| arachnoid villi | granulaciones meníngeas |
| arachnoid villi | granulaciones de Pacchioni |
| arachnoid villi | granulaciones aracnoides |
| arachnoid villi | cuerpos de Pacchioni |
| intra-arachnoid | intraaracnoide |
| pia-arachnoid | leptomeninge (secundina cerebri, meninx tenuis) |
| pia-arachnoid | aracnopia (secundina cerebri, meninx tenuis) |
| pia-arachnoid | piaracnoides (secundina cerebri, meninx tenuis) |