| Term | Definition |
| ascus | sac that forms on the surface of an ascocarp in which haploid spores are formed |
| basidium | club-shaped sexual reproduction structure that forms on the gills of basidiomycetes |
| budding | asexual reproduction where a small cell forms from a larger cell and either pinches itself off or remains attached to the larger cell |
| chitin | tough carbohydrate found in many fungi and in the exoskeletons of all arthropods |
| hypha | slender filament that is part of the body of a mulitcellular fungus |
| lichen | symbiotic association between a fungus and an alga or cyanobacterium |
| mycelium | mass of hyphae forming the body of a fungus |
| mycorrhiza | mutalistic association between a fungus and a plant's roots, in which the fungus absorbs water and nutrients for the plant and the plant supplies food to the fungus |
| rhizoid | hypha that acts as an anchor for a fungus; hair like projection that anchors a nonvascular plant |
| stolon | stem like structures of a mold |
| yeast | common name given to unicellular ascomycetes |
| zygosporangium | thick-walled sexual structure that characterizes members of the phylum Zygomycota |