Hypertext Webster Gateway: "polarizer"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Polarizer \Po"lar*i`zer\, n. (Physics)
That which polarizes; especially, the part of a polariscope
which receives and polarizes the light. It is usually a
reflecting plate, or a plate of some crystal, as tourmaline,
or a doubly refracting crystal.
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