What does "floatstone" mean?

A kind of calcareous rock, more than 10% of which is made up of grains larger than two millimetres, and which is matrix-supported.

What is a synonym for "floatstone"?

Common synonyms include: stone.

noun

noun ·Rare ·Advanced level

Noun

1
A kind of calcareous rock, more than 10% of which is made up of grains larger than two millimetres, and which is matrix-supported. countable, uncountable

From float + stone.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.