[ahr-thruh-spawr, -spohr]
noun Biology.
  1. an isolated vegetative cell that has passed into a resting state, occurring in bacteria and not regarded as a true spore.
  2. one of a number of spores of various fungi and certain blue-green algae, united in the form of a string of beads, formed by fission.

Origin of arthrospore

First recorded in 1890–95; arthro- + spore
Related formsar·thro·spor·ic [ahr-thruh-spawr-ik, ‐spor‐] /ˌɑr θrəˈspɔr ɪk, ‐ˈspɒr‐/, ar·thros·po·rous [ahr-thros-per-uh s, ahr-thruh-spawr-uh s, ‐spohr‐] /ɑrˈθrɒs pər əs, ˌɑr θrəˈspɔr əs, ‐ˈspoʊr‐/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for arthrospores

Historical Examples of arthrospores

British Dictionary definitions for arthrospores


  1. a sporelike cell of ascomycetous fungi and some algae produced by a breaking of the hyphae
  2. a resting sporelike cell produced by some bacteria
Derived Formsarthrosporic or arthrosporous, adjective
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