What does anacharis mean?
Anacharis is the common trade name for a hardy submerged freshwater plant, known scientifically as Egeria densa and formerly classified as Elodea densa. Native to South America, it has dark green leaves arranged in dense whorls along slender trailing stems, and it grows readily either rooted in sediment or floating free. Aquarium keepers prize anacharis because it absorbs excess nutrients, produces oxygen, and offers shelter for fish and fry, making it one of the most widely sold oxygenating plants in the hobby. Its vigor, however, has a downside: released into ponds, lakes, and slow-moving waterways, it can form invasive mats that crowd out native vegetation, leading several regions to restrict or ban its sale. In everyday use, the word appears almost exclusively among aquarists, water gardeners, and those dealing with invasive-species management rather than in general literature.
nounAnacharis is a common aquarium and pond plant, a submerged aquatic perennial with dense whorls of slender green leaves, widely sold for oxygenating freshwater tanks.
- A submerged freshwater aquatic plant (Egeria densa, formerly Elodea densa) with whorled green leaves, popular in aquariums and garden ponds as an oxygenator.
"The aquarist added a bunch of anacharis to the tank to help keep the water clear and oxygenated."
"A few stems of anacharis rooted quickly and soon formed a lush green thicket at the back of the aquarium."
"Conservationists warned that discarded anacharis from backyard ponds can spread through waterways and crowd out native plants."
In practice the word functions as a mass noun; speakers refer to 'stems', 'bunches', or 'strands' of anacharis rather than counting individual plants.
"Three more bunches of anacharis were added to the tank."
Despite being sold by the bunch in pet shops worldwide, anacharis is so vigorous that it's banned as an invasive weed in several U.S. states.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of anacharis
The name anacharis comes from New Latin, the scientific naming tradition built on classical Greek roots, and was established as a botanical genus name in the nineteenth century when the plant was described by European botanists after its introduction from South America. Although the word carries the flavor of scholarly Latin coinage rather than everyday English inheritance, it shares its underlying Greek element charis — meaning grace, favor, or kindness — with familiar words such as charisma and charitable. The common name 'anacharis' spread through the horticultural and aquarium trades, which favored it over shifting scientific names as botanists reclassified the species between Elodea and Egeria.
How anacharis is actually used
Anacharis is primarily a trade and hobbyist name used by aquarium suppliers and fishkeepers; botanists now generally place the plant in the genus Egeria, and it was long known as Elodea densa. It is not a term of formal literary vocabulary.
Easily confused with anacharis
An anachronism is something out of its proper historical time, whereas anacharis is a living aquatic plant used in aquariums and ponds.