Crossword puzzle clue "optical glass"

Here are the possible solutions for optical glass clue

Answer
Clue
Relevancy
lens
Clue
Optical glass
Definition
a piece of transparent matter with one or both surfaces curved to cause regular convergence or divergence of rays passing through it
thoria
Clue
White, earthy powder used for optical glass
halfempty
Clue
Like the glass, when viewed by someone who's pessimistic about how much liquid is in the glass
rondelle
Clue
Small glass disk used as an ornament in a stained-glass window
aas
Clue
Batteries in optical mice
Definition
AA, (Hawaiian) a volcanic rock consisting of angular blocks of lava with a very rough surface
aorb
Clue
Optical illusion question, "Which is longer, ___?"
Optical illusion query, “Which is longer, ___?”
'Which is longer, --?' (optical illusion question)

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