anaclastic glass

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anaclastic glass (plural anaclastic glasses)

  1. A glass or phial, shaped like an inverted funnel, with a very thin convex bottom that can be made concave or convex by sucking out or blowing in air.

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for anaclastic glass in
Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.)