any of the freshwater algae of the genus Anabaena, commonly occurring in masses and often contaminating drinking water, giving it a fishy odor and taste.
Origin of anabaena
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
noun plural -nas
any freshwater alga of the genus Anabaena, sometimes occurring in drinking water, giving it a fishy taste and smell
Word Origin for anabaena
New Latin, from Greek anabainein to shoot up, go up, from ana- + bainein to go; so called because they rise to the surface at intervals
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012