| lichen | any thallophytic plant of the division Lichenes |
|---|---|
| lichen | any of several eruptive skin diseases characterized by hard thick lesions grouped together and resembling lichens growing on rocks |
| lichen | an eruption of shiny flat-topped purplish (usually itchy) papules on the wrist and forearms and thighs |
| lichen | an eruption of shiny flat-topped purplish (usually itchy) papules on the wrist and forearms and thighs |
| lichen | category used especially in former classifications for organisms now constituting the division Lichenes |
| lichen | comprising the lichens which grow symbiotically with algae |