Enter a clue or pattern or both:

The Clue

Common mica (9 letter answer)

The Answer

ISINGLASS

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Notes

The answer ISINGLASS is so rare that it appears less than once every 2500 puzzles.

Related Clues

Fish glue
Clarifying agent in glues and jellies

Definition

ISINGLASS as a noun:

1. (mica, isinglass) = any of various minerals consisting of hydrous silicates of aluminum or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves; used as dielectrics because of their resistance to electricity