-biont

-biont

suff.
Living organism; mode of living: halobiont.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

-biont

,
a combining form meaning “an organism” or “a part of an organism” that takes the form or lives in the environment specified by the initial element: phycobiont.
[< Greek biont-, s. of biṓn, present participle of bioûn to live]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.