Abacinate is a rare and obscure word that means to blind by exposing someone's eyes to the sun's glare. The word comes from the Latin 'ab' for away and 'acinus' for grape seed, which meant blinding someone with a heated grape seed. There are few direct synonyms for this difficult term, but some related and approximate terms might include words like dazzle, bedazzle, glare, and blind. These words all suggest an intense brightness that can cause temporary or permanent vision impairment. While these words are not exactly interchangeable with abacinate, they do serve as possible alternatives when attempting to describe the blinding effects of a bright light.