A small usually single-celled asexual reproductive body produced by many nonflowering plants and fungi and some bacteria and protozoans and that are capable of developing into a new individual without sexual fusion.

Roget 330: powderiness^† [State of powder.], pulverulence^†; sandiness etc. adj.; efflorescence; friability.    powder, dust, sand, shingle; sawdust; grit; meal, bran, flour, farina, rice, paddy, spore, sporule^†; crumb, seed, grain; particle etc. (smallness) 32; limature^†, filings, debris, detritus, tailings, talus slope, scobs^†, magistery^†, fine powder; flocculi [Lat.].    smoke; cloud of dust, cloud of sand, cloud of smoke; puff of smoke, volume of smoke; sand storm, dust storm.    [Reduction to powder] pulverization, comminution^†, attenuation, granulation, disintegration, subaction^†, contusion, trituration [Chem], levigation^†, abrasion, detrition, multure^†; limitation; tripsis^†; filing etc. v.. [Instruments for pulverization] mill, arrastra^†, gristmill, grater, rasp, file, mortar and pestle, nutmeg grater, teeth, grinder, grindstone, kern^†, quern^†, koniology^†.    ... show more

Dutch: spoor
Polish: zarodnik, spora