| PSIL | a hallucinogenic compound obtained from a mushroom |
|---|---|
| PSIL | a hallucinogenic compound obtained from a mushroom |
| PSIL | a mineral consisting of hydrated basic oxide of manganese and barium |
| PSIL | Paleozoic plants |
| PSIL | Paleozoic simple dichotomously branched plants of Europe and eastern Canada including the oldest known vascular land plants |
| PSIL | any plant of the order Psilophytales: a savannah plant |
| PSIL | any plant or fossil of the genus Psilophyton |
| PSIL | whisk ferns |
| PSIL | falling out of hair |
| PSIL | small family of lower ferns having nearly naked stems and minute scalelike leaves |
| PSIL | lower vascular plants having dichotomously branched sporophyte divided into aerial shoot and rhizome and lacking true roots |
| PSIL | whisk ferns |