| PEL | cliff brake of California and Baja California having purple-brown leafstalks |
|---|---|
| PEL | fern of New Zealand and Australia having trailing fronds with dark green buttonlike leaflets |
| PEL | a disease caused by deficiency of niacin or tryptophan (or by a defect in the metabolic conversion of tryptophan to niacin) |
| PEL | a solid missile discharged from a firearm |
| PEL | a small sphere |
| PEL | thin protective membrane in some protozoa |
| PEL | genus of fungi having the hymenium in the form of a crust |
| PEL | fungus causing a disease in potatoes characterized by black scurfy spots on the tubers |
| PEL | fungus causing a disease in coffee and some other tropical plants |
| PEL | small Mediterranean plant containing a volatile oil once used to relieve toothache |
| PEL | herb that grows in crevices having long narrow leaves and small pink apetalous flowers |
| PEL | small Mediterranean plant containing a volatile oil once used to relieve toothache |