bioconcretion

English

Etymology

bio- +‎ concretion

Noun

bioconcretion (plural bioconcretions)

1. Hardened biological materials.
   • 2007, D. Roy Cullimore, Practical Manual of Groundwater Microbiology, Second Edition‎^[1]:

     These relatively inert materials simply collect within the biomass and can sometimes gradually become bioconcretions.