noun
Meaning 1
A rocky material made of calcium carbonate or other calcareous materials, usually derived from the skeletons of dead coral, which houses various marine animals, algae and bacteria and is used as an important part of aquascaping and biological filtration in marine aquaria.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
Qualifier: aquarium
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided