Egeria densa
- noun
- Specialized
:
Egeria densa
- Many aquarists add Egeria densa to their tanks to improve water quality.
Examples
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The fast growth of Egeria densa makes it ideal for beginners in the aquarium hobby.
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Invasive populations of Egeria densa can sometimes disrupt local waterways.
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The aquarium was filled with Egeria densa.
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I love how Egeria densa enhances the tank's beauty.
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Many aquarists add Egeria densa to their tanks to improve water quality.
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The fast growth of Egeria densa makes it ideal for beginners in the aquarium hobby.
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I love how Egeria densa enhances the tank's beauty.
Synonyms
A water plant with deep green, dense leaves used to add oxygen to aquariums
A green water plant people grow in tanks to add oxygen and shelter for fish
Surface Forms
Morphology
Egeria + densa
This is a scientific binomial (genus + species) functioning as a proper name for a specific aquatic plant; its referential meaning (a plant used to oxygenate aquariums with particular foliage) is domain-specific and not compositionally derivable from the parts. The second element 'densa' is Latin/absent from the learner dictionary, and even knowing 'Egeria' as a plant genus would not enable a B1 learner to infer the practical aquarium-related meaning. Therefore the expression is effectively idiomatic/proper-nominal and opaque to general learners.
Etymology
Egeria densa may come from an old Roman water nymph named Egeria and the Latin word densa, which means 'dense' or 'thick'. The nymph part matches that the plant lives in water, and densa describes its thick, bushy growth, so the name fits a water plant that grows in dense green bunches.
