In a way that involves or relates to both eyes working together; using binocular vision or perception.
From 'binocular' (adjective, relating to two eyes) plus '-ly' adverbial suffix; technical term from vision science and medicine since the 19th century.
When you say 'I see that binocularly,' you're using a technical term that proves we didn't see the world this way until we had a word for it—language and consciousness create each other.
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