plural sanctums
somewhat formal
1
: a place where you are not bothered by other people
Her office was her sanctum.
2
: a holy or sacred place
the sanctum of a church
Cite this Entry
“Sanctum.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/sanctum. Accessed 16 Jun. 2026.
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