In shortReaders who land here meaning Zenith rather than Nadir are usually searching for phrases like “what is the zenith”, “where does the word zenith come from”, “zenith vs nadir”.
Zenith
“what is the zenith”
“where does the word zenith come from”
“zenith vs nadir”
“is the sun at the zenith at noon”
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03 · The mix-up
Where the confusion comes from
The mix-up“Zenith is a Greek or Latin word, like most astronomical terms.”
What's true
It's Arabic, and it arrived corrupted. Along with nadir, azimuth and dozens of star names, it's a survival of Arabic astronomy's transmission into medieval Europe.