<jargon> To figure out something by meditation or by a sudden flash of enlightenment. Originally applied to bugs, but occasionally applied to problems of life in general. "How'd you figure out the buffer allocation problem?" "Oh, I zenned it."
Contrast grok, which connotes a time-extended version of zenning a system. Compare hack mode. See also guru.
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Nearby terms: ZEBRA « Zed « Zen « zen » ZENO » zepto » Zermelo Fränkel set theory